Question

An inductance of 2H carries a current of 2A.
To prevent sparking when the circuit is broken,
a capacitor of 4uF is connected across the
inductance. The voltage rating of the capacitor
is of the order of:
(1) 1000 V (2) 10 V (3) 100 V (4) 10^4 V​

Answer 1

Explanation:

Li2=21CV2

∴V=CLi=4×10−62(2)=2×103V