A 10Ω electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element ? A. 220V B. 220/ 2V C. 110VD. 220 √2V

The frequency of a circuit consisting of a capacitance C and a resistor R is________________? A. C/R B. R/CC. 1/RC D. 1/ 2RC

What is the self-inductance of a coil in which an induced emf of 2V is set up when the current changes at the rate of 4 As-1 ? A. 0.5 mHB. 0.5H C. 2.0H D. 8.0H

When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________? A. Same B. Different C. At…

Ammeter connected in an AC circuit measures______________? A. The exact value of the currentB. RMS value of the current C. The net value of the current D. The peak value of the current

A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________? A. (R+2πfL) B. R+1/2πfL C. (R2+f2L2)D. (R2+4π2f2L2)

If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________? A. Remains sameB. Brightness increases C. Brightness decreases D. No light

A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________? A. 32Ω B. 62Ω C. 50Ω D. 100Ω

In the capacitive circuit the current___________________? A. Lags behind voltage by π/2 B. Is in phase with voltage C. Opposite in phase of voltage by πD. Leads forward the voltage by π/2

When A.C current passes through a capacitor then the current relationship will be_______________? A. The current lead voltage by phase angle is 90 degrees B. The voltage leads current by phase angle is 90 degrees C. The current lead voltage…