A circuit with a resistance of $3 Omega$ has a fuse with a capacity of $2 A$ . Can a voltage of $5 V$ be applied to the circuit without blowing the fuse?

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Answer 1 · 2016-05-02T00:00:56

Yes, it can be applied.

By Ohm's law ,
$V= IR$ or $I= V/R$

$I$ = $5/3$ = $1.6$ $A$
Current in circuit is $1.6$ amperes. Fuse is $2$ $A$ . So it will not blow.

A circuit with a resistance of 3 Omega3 Omega has a fuse with a capacity of 2 A2 A. Can a voltage of 5 V5 V be applied to the circuit without blowing the fuse?