Important questions for class 12 Physics Chapter 2 Electrostatic Potential and Capacitance

important questions class 12 physics chapter 2 electrostatic potential capacitance 1

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The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in fig. Which of the following statements is correct

The voltage lags behind the current by

\frac{Π}{2}

The voltage leads the current by

\frac{Π}{2}

The voltage and the current are in phase

The voltage leads the current by

Π

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The diagram shows a capacitor C and a resistor R connected in series to an ac source.

V_{1}

and

V_{2}

are voltmeters and A is an ammeter

Consider now the following statements

1) Readings in A and

V_{2}

are always in phase
2) Reading in

V_{1}

is ahead in phase with reading in

V_{2}

3) Readings in A and

V_{1}

are always in phase which of these statements are / is correct

I only

II only

I and II only

II and III only

Chapter 2 - Electrostatic Potential and Capacitance

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