JEE Advanced 2017 Paper 2 Physics Q9

Physics · Alternating Current

Problem

The instantaneous voltages at three terminals marked

X

Y

and

Z

are given by

V_X=V_0\sin\omega t

V_Y=V_0\sin(\omega t+2\pi/3)

and

V_Z=V_0\sin(\omega t+4\pi/3)

. An ideal voltmeter is configured to read rms value of the potential difference between its terminals. It is connected between points

X

and

Y

and then between

Y

and

Z

. The reading(s) of the voltmeter will be