A circuit with a resistance of #4 Omega# has a fuse melts at #6 A#. Can a voltage of #12 V# be applied to the circuit without blowing the fuse?

1 Answer
Jan 23, 2016

Answer:

Yes

Explanation:

Data:-

Resistance#=R=4Omega#

Voltage#=V=12V#

The fuse melts at 6A

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 #12V# across a #4Omega# resistor, therefore, the current flowing is

#I=12/4=3# #implies I=3A#

Since, the fuse melts at #6A# but the current flows only #3A# therefore, the fuse will not melt. Thus, the answer to this question is yes.