Class 10 Current
Physics Current Electricity Level: Misc Level
Wire A has a potential difference of 50 V across it and carries a current of 2 A. Wire B has a potential difference of 100 V across it and also carries a current of 2 A. Compare the resistances, rates of flow of charge, and rates of flow of energy in the two wires.
Physics Current Electricity Level: Misc Level
A 120 -V electric coffeepot draws a current of 0.6 A. What is the resistance of its heating element?
Physics Current Electricity Level: Misc Level
What is the total resistance of a parallel circuit that has three branches with resistance of 2 ohms, 2.5 ohms,, and 4 ohms?
8.5 ohms, 1.15 ohms, 2.83 ohms, 0.87 ohm
Physics Current Electricity Level: Misc Level
Four resistors in a series circuit are as follows r 1 = 15 ohms, r 2 = 30 ohms, r 3 = 45 ohms, r 4 = 60 ohms. What a voltage of 220 volts across the terminals of the electromotive force, the current in the circuit will be?. 368 amp, 1.47 amps, .682 amp, 5.87 amps
Physics Current Electricity Level: Misc Level
In your manufacturing company you have 10 lights that have a voltage across them of 200 volts,and the total current used by the lamps is 30 amps. At $ 1. 40 per kwhr, what is the cost of operating the lights for 12hours?
280, 175.6, 100.8, 56.2
Physics Current Electricity Level: Misc Level
The power input required by a dc electric motor that is run on a 220 volt line and draws 10 amps is ?
22 watts, 220 watts, 2200 watts, 22,000 watts.
Physics Current Electricity Level: University
ResistanceDetermine the total resistance.
Question Diagram
Physics Current Electricity Level: University
How much current will flow through the 8.0 Ohm resistor?a. 1.0A
b. 0.29A
c. 0.50A
d. 2.0 A
e. none of the other responses is
Question Diagram
Physics Current Electricity Level: University
Current & ChargeIn a certain DC circuit 1.50A of current flows through a 4.00 Ohm metal resistor for a period of 90.0S. During this time interval what is the net number of electrons that have passed through a cross- section of the resistor?
a. 135
b. 8.43 x 10^20
C. 3.37 x 10^21
d. 1.04 x 10^17
e. 5.06 x 10^21
Physics Current Electricity Level: University
Power and ResistanceAn electric heater is basically a wire through which the electric current flows. What is the resistance of such a heater if its power is 1000W and it is used in a regular home so that the voltage is 110 V.