How much current will an electric bulb draw from a 220 V source, if the resistance of the bulb filament is 1200 Ω? (b) How much current will an electric heater coil draw from a 220 V source, if the resistance of the heater coil is 100 Ω?

Q: If the battery in the circuit below is 9.77V, resistor R1=83.862, and resistor R2=59.65N, what is…

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Q: An experimenter accidentally touches a 240 V dc line. If his skin resistance is 10 000 Ω, what value…

A: Given data :               Voltage (V) = 240 V               Resistance (R) = 10000 Ohm

Q: when operated at 120 V. How much charge enters (and leaves) the light bulb in 8.7 min?

A: See solution on next page

Q: A battery has an emf of 12 V and an in- ternal resistance of 0.1 2. Its terminals are connected to a…

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Q: A person with body resistance between his hands of 10.0 kΩ accidentally grasps the terminals of a…

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Q: A battery with EMF of 20 V and an internal resistance, r = 0.02 ohms is connected to the load…

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Q: A battery of 9V is connected in series with resistors of 0.2Ω, 0.3Ω, 0.4Ω ,0.5Ω and 12 Ω,…

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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: How much current will be flowing through a 69m length of copper wire with radius 6.9mm if it is…

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Q: A rechargeable flashlight battery is capable of delivering 62 mA for about 9 h. How much charge can…

A: We know that  Current= rate of change of charge I= dQ/dt Given that I= 0.062 A time= 9 hour =…

Q: Calculate the emf of the battery if the potential drop in the circuit is 2.5 V and battery's…

A: Please note : As per answering guidelines I can answer the first question only. Since, this is not a…

Q: Two identical resistors of 249 Ohms are configured in parallel and connected to a 12.8V power…

A: Resistance of the resistors R = 249 ohms Voltage of the power supply V = 12.8 V

Q: A battery with EMF of 27 V and an internal resistance, r = 0.63 ohms is connected to the load…

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Q: Given that V= J/A-s and 1 Kwh = 3.6 x106 J, what does it cost to operate a window-type air…

A: Given V = J/A-s 1 Kwh = 3.6 x 106 J Current = 10 Amp Voltage = 110 V

Q: In the US, the conventional voltage seen in a recepticle (wall outlet) is 120 V. How many amperes is…

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Q: resistance of an electric heater is 45 Ω when connected to 120 V. How much energy does it use…

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Q: Each of three identical electric heaters is rated at 1000 W when operated across 100-V lines. When…

A: Given: Rating of electric heater (P)= 1000 W. Standard Supply voltage (V) = 100 V. Supply in circuit…

Q: The resistance of electric heater is 14 Ohm when connectedto 120 V What is the power consumption of…

A: Given, the resistance of electric heater is R=14 Ohm when connected to a voltage source, V=120 V We…

Q: What is the output voltage (in V) of a 3.0000 V lithium cell in a digital wristwatch that draws…

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Q: Suppose that each headlight of a car uses 3 A and that the driver accidentally left the headlights…

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Q: A given copper wire has a resistance of 5.00 Ω at 20.0°C whilea tungsten wire of the same diameter…

A: Equate the resistance of copper and tungsten

Q: Given the temperature coefficient of resistivity of a certain wire to be 3.1 x10−3 (°C)−1.By what…

A: Given temperature coefficient of resistivity , α=3.1 x10−3 (°C)−1 Let   T1 =20.0°C        T2 = 79.48…

Q: The resistance of a coil of aluminium wire at 18°C is 200Ω. The temperature of the wire is increased…

A: Given: The resistance of a coil of aluminium wire at T0= 18°C is , R0 = 200Ω The increased…

Q: An electric heater is constructed by applying a potential difference of V=50.52V to an element wire…

A: Given: The potential difference is 50.52 V. The resistance of the circuit is 19.03 Ohm.

Q: An aluminum wire has resistance of 80 ohms at 30 degree Celsius. And determine its resistance when…

A: Given: Initial Resistance of wire (R0) = 80 ohms. Initial Temperature of wire Ti= 300C Final…

Q: A bathroom heater uses 10.5 A of current when connected to a 120. V outlet. Which of the following…

A: Given, Voltage on bathroom heater V = 120 V Current on bathroom heater I = 10.5 A   We know the…

Q: copper wire has a resistance of 15.0  at a temperature of 14 o C. After a current passes through…

A: The relation of temperature dependence of the resistance is given…

Q: 3.6 O 106 J, what does it cost to operate a window- type air conditioning for one hour if the unit…

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Q: - In a discharge tube, the number of protons drifting across any cross-section is 1-0 x 1018 per…

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Q: The power supply voltage is 15 V. Resistor 1 has a resistance of 1.5 ohms. Resistor 2 has a…

A: The power supply voltage   The voltage across each branch of the parallel combination is

Q: If the external source has an emf of +6.0 V and the electrolytic cell is 65% efcient, how much…

A: Electrical power is the power generated due to the flow of electricity.

Q: The power dissipated by a load resistor of 490 is 61W. If the "load" voltage across the resistor is…

A: According to question--- Given values-- power = 61 W. resistance R = 49 ohm. internal resistance r…

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: 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: What If? For what value of  (in volts) will the current in the ammeter read 1.59 A?

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Q: urrent will an electric heater draw from a 110-volt lib]ne if the resistance of the heater when

A: Given:- Voltage V = 110 V  The resistance of the heater = 26.7 Ω Find:-  The current of the electric…

Q: A metal wire has a resistance of 10.00 W at a temperature of 20°C. If the same wire has a resistance…

A: Given: The resistance of the wire at 20 oC is 10 w. The resistance of the wire at 90 oC is 10.55 w.…

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: The resistance of a 60.-watt lightbulb operated at 120 volts is approximately (1) 720 Q (2) 240 Q…

A: Power P=VI  Also V=IR  R=V/I

Q: The resistance of an electric heater is 20N when connected to 120 V. How much energy does it use…

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Q: The resistance of electric heater is 32 Ohm when connectedto 120 V What is the power consumption of…

A: Answer:        Given Values,

Q: The resistance of electric heater is 13 Ohm when connectedto 120 V What is the power consumption of…

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Q: What is the voltage in volts (V) across the 2.00 a resistor in the circuit below if an emf of 24 V…

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Q: If the copper wire of an electromagnet has a resistance of 0.300 Ω when at room temperature (20 oC)…

A: Given: The resistance of the wire at a temperature of 20oC is 0.300 Ω. The final resistance of the…

Q: A) 5J (21) Find the resistance of a light bulb of a power of 10W when connected to 120V source B)…

A: According to the question given Power of the light bulb P = 10 W Source voltage V = 120 V P = V ×…

Q: The resistance of a coil of copper wire is 3.35 Q at 0°C. What is its resistance at 50°C. For copper…

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Q: Suppose that each headlight of a car uses 3 A and that the driver accidentally left the headlights…

A: Energy stored in battery is given by,  E=VIt Here, V is voltage, I is current and t is time.  Energy…

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.