# A circuit with a resistance of #6 Omega# has a fuse that melts at #8 A#. Can a voltage of #21 V# be applied to the circuit without blowing the fuse?

##### 1 Answer

Jan 9, 2016

#### Answer:

It works without melting.

#### Explanation:

To solve it, we apply the resistance formula:

If

So, we check the limit of the voltage, when Current is 8, and if the voltage is higher than 21, the circuit will work:

So, 21 < 48. It works without melting.