Answered: An electric device draws 6.5 A at 240…

An electric device draws 6.5 A at 240 V. If the voltage drops by 15%, what will be the new current? O 1. 6 A 2. 5.5 A 3. 1A 4. None 5. 4.8 A

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 36P: If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W...

See similar textbooks

Related questions

Q: What resistance will cause a current of 200uA, if the potential difference is 18V. O 0.092 O 9x10^3…

A: According to the ohm's law, V=IRR=VI

Q: An electric device delivers a current of 0.5 A for 10 seconds. How many electrons (1.6x10-19C) flow…

Q: An electric heater is constructed by applying a potential difference of 126.3V across a wire with a…

A: Potential difference (V) = 126.3 volts Resistance (R) = 5 ohm

Q: A solar cell provides an emf of 0.380 V. If the cell supplies a constant current of 18.0 mA for 9.00…

A: A solar cell provides an emf of 0.380 V. If the cell supplies a constant current of 18.0 mA for 9.00…

Q: An electric heater is constructed by applying a potential difference of 114.4V across a wire with a…

Q: According to chargetech.com, the ideal rating for a high-capacity power bank is 40,000 mAh. How many…

Q: A light bulb operating at 110 V draws 1.20 A of current. What is its resistance? 109 Q 78.6 Q 154 Q…

A: Given data: Voltage (V) = 110 V Current (I) = 1.20 A Required: Resistance (R)

Q: Find the current I4 and the voltage V2 for the network shown in Figure 1. R1 4 0 12 V R33 N V2 R3 E…

Q: 12 V = R 15. Six 2 Q resistors are connected to a 12 V battery, as shown in the figure above. What…

A: Given, all the resistors are 2 ohm. We need to first simplify the circuit. Assuming current I flows…

Q: The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.492,…

A: Given that - EMF of the battery Internal Resistance of the battery To Find - We have to determine…

Q: KrUAScHOOL 2. Find the magnitude and direction of the current in the 2.0 -2 resistor in the drawing|…

A: according to kirchoff's voltage law when move across closed loop the net voltage drop is zero…

Q: A 40 nW device has a potential difference of 8 µV. What is the current? A. 5 kA B. 5 mA C. 5 MA D. 5…

A: Electric current is the flow of electrons across a conductor. It is represented by the letter I.…

Q: An 18 gauge copper wire (diameter 1.02 mm) carries a current with a current density of 3.20 * 106…

A: (a) The expression for the current density is written as, Here, I and A represent the current in…

Q: NOW YOU DO IT! Activity 2: Fill in the table Directions: Supply the table with the correct answers.…

Q: R1 V1+ R2 V2+ R3

A: Given, R1 = 20 ΩR2 = 12 ΩR3 = 4 ΩV1 = 9 VV2 = 3 V

Q: A 200 load receives power from parallel-connected battery cells, as shown in the figure below.…

A: Given EMF of the two batteries are given as V1=V2=12 V Internal resistance of the two batteries are…

Q: An electric utility company supplies a customer's house from the main power lines (120 V) with two…

Q: In one hour, what is the total charge which passed through a 60-watt light bulb carrying a current…

A: Given(s): Power of the bulb, P=60 W Current through the bulb, I=0.5 A Time, t=1 h=3600 s Require:…

Q: A wire is 2.3 m long and has a diameter of 0.38 mm. When connected to a 1.2 V battery, there is a…

Q: 3. A voltage of 4.50 V is measured across a resistor with 2.00 A of current flowing through t What…

A: Given:- The voltage V = 4.50 V The current I = 2 A Find:- The resistance of the resistor? 2.25…

Q: A current of 25 A flows through a resistor of resistance 450. Calculate the power loss of the…

Q: Find the current (in A) when a charge of 1200C flows in 6 seconds. A) 7200 B) 200 C) 100 D) 3600

A: Current is rate of flow of charge. I=Qt Here, I is current, Q is amount of charge and t is time.

Q: An electric device delivers a current of 10 A for 10 seconds. How many electrons (1.6x10-19C) flow…

A: Given, Current (I) =10A Time(T) =10 seconds We know, Charge(Q) = I * T Q= 10* 10 =…

Q: R2 R4 R1 R3 a

A: R1 = 7.2 ohm R2 = 1 ohm R3 = 6.3 ohm R4 = 6.2 ohm V = 39.9 volts R2 and R3 are in parallel,…

Q: A 5 W, a 20 W, and a 25 W resistor are connected in parallel and placed across a 9.0 V potential…

Q: A 10-ohm resistor has a constant current. If 1200C of charge flow through it in 4 minutes what is…

A: Given, Time, t=4 min=240 s Charge, Q=1200 C

Q: A current of 5A passes through a wire. The number of electrons crossing a point in the wire in 2…

Q: 4 Two batteries, & = 6 V, 0.25 N, and E2 = 12 V, 0.5N are connected series- opposing. An external…

Q: A typical AAA battery can move 2000 C of charge at 1.5 V. How long will this run a 50 mW LED? a.…

A: Voltage, V = 1.5 V charge, q = 2000 C Power, P = 50 mW

Q: An electric device delivers a current of 0.5 A for 10 seconds. How many electrons (1.6x10-19C) flow…

A: Given: Current, I = 0.5 A. Time duration, t = 10 s. To Find: The number of electrons flow through…

Q: 3.A hair blower contains a heating element which has a resistance of 57 N. This heating element is…

A: Electricity is related to the flow of electrons. Conductance of electricity determines its power.…

Q: An electric device delivers a current of 1 A for 10 seconds. How many electrons (1.6x10-19C) flow…

Q: Three resistors are connected across a battery of unknown voltage as shown below. 599 3b What value…

Q: 5. Find the current in the 12 2 resistor shown in the Figure. 6.0n 3.0 1 6.0 N 3.00 4.0 0 2.0 n 12A…

A: According to Ohm's law , the voltage in a circuit is calculated by using the formula V=IR , where I…

Q: 20 0 300 6.0 V 두 Figure 2 Figure 2 shows three resistors connected in a circuit. When the switch s…

Q: 1. A service station charges a battery using a current of 6.7-A for 5.0 h. How much charge passes…

A: Given: Current (i)=6.7 A Time (t)= 5 hrs=18000 s The charge = q

Q: Several electric bulbs designed to be used on a 220 V electric supply line, arerated 10 W. How many…

Q: A current of 2.2 A flows through a battery for 9 min. How much charge passes through the battery in…

A: The current passing through a battery is, The time taken by current across a battery is,

Q: A typical lightning bolt may last for 0.197s and transfer 1.19 ✕ 1020 electrons. Calculate the…

A: The charge of the electron is(e) 1.6*10-19 C Given that lightning bolt may last for(t) 0.197s and…

Q: . A 60.0-W lamp is placed in series with a resistor and a 120.0- source. If the voltage across the…

A: Given: The power rating of the lamp is 60 W. The voltage across the lamp is 25 V. The total supplied…

Q: How many electrons flow through a battery that delivers a current of 3.0 A for 12 s?

A: Given current flowing through a battery = I = 3.0 A time for flow of current = t = 12 s we have to…

Q: A calculator draws a current of 0.0002 A for 2 min. How much charge flows through it?

A: The current drawn by the calculator is I = 0.0002A. The time taken is t = 2 min. Assume the charge…

Q: Two 12.0 V batteries are connected in parallel. What is the total voltage of this combination?…

A: Answer Two 12 V batteries are connected in parallel. We have to find the total voltage of this…

Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

An electric device draws 6.5 A at 240 V. If the voltage drops by 15%, what will be the new current?
1. 6 A
2. 5.5 A
3. 1 A
4. None
5. 4.8 A

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like protons or electrons. You may have seen it used to make human hair stand on end or produce large sparks. One application of the Van de Graaff generator is to create X-rays by bombarding a hard metal target with the beam. Consider a beam of protons at 1.00 keV and a current of 5.00 mA produced by the generator, (a) What is the speed of the protons? (b) How many protons are produced each second?
Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
Three identical 60.0-W, 120-V lightbulbs are connected across a 120-V power source as shown in Figure P28.72. Assuming the resistance of each lightbulb is constant (even though in reality the resistance might increase markedly with current), find (a) the total power supplied by the power source and (b) the potential difference across each lightbulb.
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source, as shown in Figure P18.50. Find (a) the total power delivered to the three bulbs and (b) the potential difference across each. Assume the resistance of each bulb is constant (even though, in reality, the resistance increases markedly with current). Figure P18.50
A 12-V car battery is used to power a 20.00-W, 12.00-V lamp during the physics club camping trip/star party. The cable to the lamp is 2.00 meters long, 14-gauge copper wire with a charge density of n=9.501028m3 . (a) What is the current draw by the lamp? (b) How long would it take an electron to get from the battery to the lamp?
The batteries of a submerged non-nuclear submarine supply 1000 A at full speed ahead. How long does it take to move Avogadro’s number (6.02 1023) of electrons at this rate?
Integrated Concepts (a) Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply: (a) To accelerate from rest to 25.0 m/s in 1.00 min? (b) To climb a 2.00 102-m- high hill in 2.00 min at a constant 25.0-m/s speed while exerting 5.00 102 N of force to overcome air resistance and friction? (c) To travel at a constant 25.0-m/s speed, exerting a 5.00 102 N force to overcome air resistance and friction? See Figure 20.44.
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
SPEAR, a storage ring about 72.0 m in diameter at the Stanford Linear Accelerator (closed in 2009), has a 20.0-A circulating beam of electrons that are moving at nearly the speed of light. (See Figure 20.39.) How many electrons are in the beam? Figure 20.39 Electrons circulating in the storage ring called SPEAR constitute a 20.0-A current. Because they travel close to the speed of light, each electron completes many orbits in each second.
A 120-V immersion heater consists of a coil of wire that is placed in a cup to boil the water. The heater can boil one cup of 20.00°C water in 180.00 seconds. You buy one to use in your dorm room, but you are worried that you will overload the circuit and nip the 15.00-A, 120-V circuit breaker, which supplies your dorm room. In your dorm room, you have four 100.00-W incandescent lamps and a 1500.00-W space heater, (a) What is the power rating of the immersion heater? (b) Will it trip the breaker when everything is turned on? (c) If it you replace the incandescent bulbs with 18.00-W LED, will the breaker nip when everything is turned on?
The human body can exhibit a wide range of resistances to current depending on the path of the current, contact area, and sweatiness of the skin. Suppose the resistance across the chest from the left hand to the right hand is 1.0 106 . (a) How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 500 mA of direct current? (b) Why should rubber-soled shoes and rubber gloves be worn when working around electricity?