Question

multiple choice question
a fuse works by
o disconnecting a parallel circuit once a preset limit of amps is reached
o disconnecting a series circuit once a preset limit of amps is reached
o flipping a switch to make a parallel circuit into a series circuit
o flipping a switch to make a series circuit into a parallel circuit
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Explanation:

A fuse is a safety device in a series - connected electrical circuit. When the current (measured in amps) exceeds a preset limit, the fuse element melts (disconnects the circuit). In a parallel circuit, the current divides among the branches, and a fuse is not used to "disconnect a parallel circuit" in the way described. Also, a fuse does not work by flipping a switch to change circuit types (series to parallel or vice - versa).

Answer:

disconnecting a series circuit once a preset limit of amps is reached