A circuit with a resistance of #8 Omega# has a fuse with a capacity of #3 A#. Can a voltage of #22 V# be applied to the circuit without blowing the fuse?

1 Answer
Feb 29, 2016

Answer:

Yes. The current produced by #22V# applied to a resistance of #8Omega# will be less than #3A#

Explanation:

You can use the #VIR# triangle as a mnemonic to help remember the relationship between voltage #V#, current #I# and resistance #R#

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This can be read as #V = IR#, #I = V/R# or #V/I = R#

In our example, #V=22#, #R=8#, so #I = V/R = 22/8 = 2.75 < 3#