Question

Q31 A resistance of 20 ohm is connected to a source of ac current rated 110 V 50 Hz. Find rms
current​

Answer 1

Answer:

We know that

i=i

0

cos2πft

i=i

o

/

2

on comparing, time taken to move maximum value to r.m.s value

t=

8f

1

t=

8×50

1

t=2.5×10

−3

sec