A circuit with a resistance of #6 Omega# has a fuse that melts at #8 A#. Can a voltage of #18 V# be applied to the circuit without blowing the fuse?

1 Answer
Jan 26, 2016

Answer:

#Yes#

Explanation:

Data:-

Resistance#=R=6Omega#

Voltage#=V=18V#

The fuse has capacity of 8A

Sol:-

If we apply voltage #V# across a resistor whose resistance is #R# then the current #I# flowing across it can be calculated by

#I=V/R#

Here we are applying voltage of #18V# across a #6Omega# resistor, therefore, the current flowing is

#I=18/6=3# #implies I=3A#

Since, the fuse has capacity of #8A# but the current flowing in the circuit is #3A# therefore, the fuse will not melt. Thus, the answer to this question is #Yes#.