An electric device draws 2.5 A at 240 V. If the voltage drops by 35% what will be the current (in A), assuming nothing else changes?

Q: If a battery is rated at 57.9 A · h, how much total charge can it deliver before it goes "dead"?

A: Given : Battery  rating 57.9 Ampere Hr. Required : Total Charge it can deliver before going dead.

Q: A heater has a resistance of 400Q when the potential difference across it is 12V. If this same…

A:

Q: In the network shown, Find the voltage V and the current Is, for lo = %3D 5 A. 6 V Is Select one: a.…

A: We will be applying Kirchoff's laws.  Also ,in the left loop the direction of current I1 is wrong,…

Q: A light bulb is rated at 30 nen operated at 120 V.

A: Given values,   P=30 watt, V=120 volt, t=9min=9*60=540 sec The rate of flow change is known as…

Q: A color television set draws about 2.5 A when connected to a 220-V source. What is the cost (in…

A: Given data The current flows in the colour television is I = 2.5 A. The voltage is given as V = 220…

Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 2.97 hours by an…

A: Given: The time interval is 2.97 h. The resistance of the circuit is 671 Ohm. The potential…

Q: The electric power of a lamp that carries 2-A at 120-V is

A: electric power = Current x  voltage   electric power of a lamp = (2A) x (120V)  electric power of a…

Q: A heater is rated as 240 V, 10 kW. How much current does it draw?

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Q: A heating element is marked 210 V, 630. What is the value of the current drawn by the element when…

A: The heating element is marked with the the maximum voltage and power it can endure. In this case it…

Q: A 1.60×103 watt iron is connected to a 1.20×102 volt line and is operated for 2.75 hours. What is…

A:

Q: A color television set draws about 1.9 A when connected to a 220-V source. What is the cost (in…

A: Power of television is P=IV=1.9 A220V=418 W=0.418 kW

Q: An electric heater carries a current of 13.5 A when operating ata voltage of 1.20 x 102 V. What is…

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Q: One wire in a high-voltage transmission line carries 1 000 A starting at 700 kV for a distance of…

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Q: An initially uncharged 5.26x10^-4 capacitor is connected to a 6.65x10^5 Ohm resistor in series. A…

A: Given C = 5.26*10-4F  Resistance R = 6.65*105ohm voltage V = 10.6 volt  we have to find out time…

Q: If a toaster has a resistance of 60 ohms and is plugged into a 120 volt outlet, how much current…

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Q: What minimum number of 75-W lightbulbs must be connected in parallel to a single 120-V household…

A: The current through one bulb can be calculated as follows,

Q: Suppose your portable DVD player draws a current of 350 mA at 6.00 V. How much power does the player…

A: Given- Current drawn by DVD player , I = 350 mA = 0.350 A Voltage across  DVD player , V = 6.00  V

Q: A flashlight is has a 15kWh battery. How long will it take to deplete the battery if the voltage…

A: Given data:  Energy (E) = 15 kWh Voltage (V) = 6 V Current (I) = 0.35 A Required: Time (t)

Q: During open-heart surgery, a defibrillator can be used to bring a patient out of cardiac arrest.…

A: According to Ohm's law, potential difference(v) = Current (I) × Resistance (R) Here , current = 11.5…

Q: How long does it take 1.00 C of charge to flow through a handheld calculator if a 0.33 mA current is…

A: Electric current can be defined as, I=dQdt, where dQ is the amount of charge flowing through a given…

Q: The largest number of 100 W electric light bulbs which can be operated from a 240 V supply fitted…

A: Given100 W electric bulbsVoltage=240 VMaximum possible Current (I)= 13 A

Q: A color television has a power rating of 323 W. How much current does this set draw from a potential…

A: The color television power, P=323 W   The potential difference, V=120 V

Q: Appliances that require a lot of power, such as a dryer or a stove, typically run on 240 V, and…

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Q: What is the potential difference across a 15 ohms resistor when a current of 6.5A passes through it?

A:

Q: A 27 Ω component is connected to a 12 V battery. How much energy is expended per second?

A: Energy expended per second is the power itself. P=V2R

Q: If the emf of the battery is 9.0 V, what is its terminal voltage when the switch is closed if the…

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Q: A light bulb has a resistance of 360Ω when turned on. How much current in will flow thru it when it…

A: Given, Resistance=r=360 Ω volatge=v=220 V let current i flow through bulb from ohms law we know the…

Q: What voltage drop will be there across a 1 kw electric heater element whose resistance when hot is…

A: The electric power in terms of voltage and resistance is  P =V2R

Q: A microwave oven draws 8 A when supplied with 120 V. The microwave is subsequently used for 6…

A: To find the electrical energy used by microwave

Q: If 18 A flows through a 37 V battery in a certain circuit, how much would it could cost to operate…

A:

Q: How much power, in W, is flowing through a 200 Ohm resistor connected to a 9 V battery?

A: Given that : Resistance ( R ) = 200 Ω Voltage ( V ) = 9 V To Find ,  Power ( P )

Q: In a parallel combination of two resistors, the value of the effective resistance of the combination…

A: The equivalent resistance of a parallel combination of two resistors is given by

Q: A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when…

A:

Q: Standard automobile batteries have six lead-acid cells in series, creating a total emf of 12.0 V.…

A: The expression for the required individual emf of lead-acid cell,

Q: How much current will be flowiing through a 40.0 length of copper wire with  a radius 4.0 mm if it…

A:

Q: The three bulbs below have the resistances RA 16 Q, Rg = 17 Q, and Rc 18 Q. If the emf of the…

A: Given data The resistance value is RA = 16 Ω The resistance value is RB = 17 Ω The resistance value…

Q: How much power is dissipated by a 60 W (120 V) lightbulb when operated, using a dimmer switch, at…

A: P1=60 WV1=120 VV2=100 V

Q: When a 24 resistor is connected across a 12 V battery, a current of 482 mA flows. What is the…

A:

Q: The resistance of electric heater is 75 Ohm when connectedto 120 V What is the power consumption of…

A: Given that :Resistance of the electric heater (R) = 75 ohmVoltage ( V) = 120 VPower consumption (P)=…

Q: a copper wire is 2.50m long and has a diameter of 2.5 mm. How much current will it draw when…

A: Given data:  A copper wire  Length (L) = 2.50 m Diameter (d) = 2.5 mm = 2.5×10-3 m Voltage (V) = 3.5…

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A:

Q: A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 ohm. What…

A: Given value--- emf of battery = 1.9 V. internal resistance = 380 ohm. We have to find--- maximum…

Q: What is the effective resistance of a car's starter motor when 150 A flows through it as the car…

A: Given data The current is Io=150 A The potential difference supplied by the battery is Vo=11.0 V…

Q: A stove element draws 12 A when connected to a 110-V line. How long (min) does it take to consume…

A: Given data:  Current (I) = 12 A Voltage (V) = 110 V Energy consumed (E) = 150 kJ = 150000 J…

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.