What is the % conversion efficiency of a battery charger that inputs 22 W and outputs 1100 mA at 12 V?

Q: A series circuit is comprised of a 200VDC battery, a switch, a 1 kΩ resistor and a 10000 µF…

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Q: The electric circuit to which a television set is connected is protected by a 15 A circuit breaker.…

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Q: Two 100 WW (120 VV) lightbulbs are wired in series, then the combination is connected to a 120 VV…

A: Here, 2 bulbs are connected in series, Resistance of each bulb (R1 & R2)  = V2P= (120)2/100 =…

Q: A 3.6 A current is set up in a circuit for 28 min by a battery with a 5 V emf. By how much is the…

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Q: A 200-volt electromotive force is applied to an RC-series circuit in which the resistance is 1000…

A: Given data: V=200 Volt R=1000 ohm C=5×10-6F To find: (a) charge q(t) on the capacitor if i(0)=0.2…

Q: the voltage across a 3.71uf capacitor in a tv circuit is 4.54 mV. Find the voltage after 0.563ms if…

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Q: A 50.7 ohm resistor is put into a circuit with a 16 volt battery. What is the power dissipated (in…

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Q: A circuit contains a 10.0 ohm resistor, a 12.0 ohm resistor, and a 6.0 ohm resistor. If they're…

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Q: A battery has an emf of 15.0 V. A load is connected and the terminal voltage of the battery is found…

A: The terminal voltage is defined as the potential difference across the connected load in a circuit.…

Q: What is the energy used to run a 9v circuit with a 90 ohm resistor for 10 seconds?

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Q: the current of a 30 ohm resistor is measured to be 0.35 amps. what is the emf E of the battery?

A: Given data Resistance (R) = 30 ohms Current (I). = 0.35 A  Emf of the battery = ?

Q: When plugged into a 120 V standard outlet, a current of 2.0 A flows through a string of tree lights…

A: The supplied voltage is The current flow is The number of bulbs in series is

Q: equivalent resistance

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Q: a) In the figure what value must R have if the current in the circuit is to be 1.1 mA? Take ε1 = 1.5…

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Q: A 9 V battery costs $1.49, and will run a portable CD player for 6 hours. Suppose the battery…

A: The objective of the question is to calculate the cost of the energy in dollars per kilowatt-hour…

Q: The figure below shows a simple RC circuit with a 3.50-µF capacitor, a 2.60-MQ resistor, a 9.00-V…

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Q: A 100-ohm load dissipates 400W of power. how much is the voltage and Current across the load?

A: Resistance, R = 100 ohm  Power, P = 400 W

Q: student in the laboratory connects a 13 Ω resistor, a 24 Ω resistor, and a 38 Ω resistor in parallel…

A: Given Data: The value of resistance of resistors is R1 = 13 Ω. The value of resistance of resistors…

Q: What is the maximum voltage, in V, that a 30 Ohm light bulb can handle if it is rated for 60 W?

A: Resistance = 30 ohm Power rating of light bulb = 60 Watt Formula used , Power = Voltage2/R

Q: V power source is connected to a f on when the voltage across the c ds after the switch is closed.…

A: Given:- In the RC circuit  VS = 54.0 V  Vc = 45 V  R = 3 M ohm  The lamp L turns on when the voltage…

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.