A circuit with a resistance of 8 Omega has a fuse with a capacity of 3 A. Can a voltage of 36 V be applied to the circuit without blowing the fuse?

1 Answer
Trevor Ryan.
Jan 12, 2016

No. The fuse will blow.

Explanation:

According to Ohm's Law, the total current flowing in a closed circuit is directly proportional to the total potential difference applied across the circuit.

V=IR.

So in this case, I_T=(V_T)/(R_T)=(36V)/(8Omega)=4,5A.

Therefore the 3A fuse will blow since 4,5A>3A.

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