01․ The resistance of 100 W, 200 V lamp is

Where, V is supply voltage and W is wattage rating of the lamp.
Here, wattage of the lamp W = 100 W, and supply voltage V = 200 Volts.

02․ Purpose of using capacitor is / are

Purposes of using capacitors are
1. Increasing p.f. of inductive load circuit.
2. To do phase split in AC 1 phase motor.
3. Effect DC filter in electronic circuit.
4. Also helps in tuning in radio and TV sets.

03․ The unit of capacitance is

A farad (F) is the SI derived unit of capacitance. A capacitor of one farad produces a potential difference of one volt between its plates when it stores an electric charge of one coulomb.

04․ What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm?

Where, A is common area of conductor plates and d is the distance between two conductor plates.

05․ The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

06․ A 50 μF capacitor is charged to retain 10 MJ of energy by a constant charging current of 1 A. Determine the voltages across the capacitor?

Where v being the voltage developed across the capacitor of capacitance(C).

07․ A p.d. of 300 V is applied across series combination of 3 μF and 9 μF capacitors. The charge on each capacitor is ___________________ μC.

08․ A capacitor that stores charge of 0.5 C at 10 V has a capacitance of _____________ farad.

09․ A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

10․ C

_{eq}of two capacitors connected in series is given bySeries combination of capacitors is same as parallel combination of resistance.

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