SSC JE Electrical Engineering 2012 Paper

Question : 165 of 200

Marks: +1, -0

A Ballistic galvanometer of constant equal to 1 micro-coulomb/degree gives a throw of 22.5°, when a capacitor discharges through the meter. If a battery of 15 V is used to recharge the capacitor, value of capacitance is

22.5 µ F
10 µ F
1.5 µ F
15 µ F

Validate

Solution:

Charge

Q=1{µc}/\degree×22.5°=22.5µc

Q = CV

C=Q/V=22.5/15µF=1.5µF

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