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Class 12 Physics Practice Test: AC Voltage Applied to a Resistor
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Class 12 Physics Practice Test: AC Voltage Applied to a Resistor
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8 Questions

1. What is the rms value of the current, if its instantaneous current value is 8 sin314 t?
2. Which value of the current do you measure with an a.c. ammeter?
3. Determine the rms value of current in the circuit if a 50 Ω resistor is connected across an ac source of 200 V, 50 Hz?
4. When a sinusoidal voltage E = 200 sin 314 t is applied to a resistor of 10 Ω resistance, the power dissipated is 250 Watts.
5. What will be the rms value of the voltage, if the sinusoidal value voltage is given as E = 100 sin 314 t applied across a resistor of resistance 15 ohms?
6. Calculate the rms voltage, if the peak value of an a.c. supply is 300 V.
7. Calculate the value of the peak current, if the rms value of current in an ac circuit is 50 A?
8. Find out the net power consumed over a full cycle, if a 150 Ω resistor is connected to a 350 V, 100 Hz ac supply.

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