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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