A circuit with a resistance of #8 Omega# has a fuse with a capacity of #3 A#. Can a voltage of #28 V# be applied to the circuit without blowing the fuse?

1 Answer
May 13, 2016

Answer:

No.

Explanation:

If the fuse can tolerate a maximum of #3A# of current (#I_c#), then the maximum voltage that can be put safely on the circuit is given as:

#V_c = I_c R#

Hence the maximum voltage, for this circuit with resistance (#R#) of #8Omega# is : #V_c = 3Axx8Omega = 24V#

As #28V>24V#, it will blow the fuse.