A sudden increase in the total current in a parallel circuit may indicate ___________________.

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Either a drop in source voltage or an open resistor

An open resistor

A drop in source voltage

A decrease in the total resistance

answer is C.

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Detailed Solution

A sudden increase in the total current in a parallel circuit may indicate a decrease in the total resistance of the circuit.

This is because, in a parallel circuit, the total current is divided among the different branches of the circuit according to the resistance of each branch. If the resistance of one or more branches decreases suddenly, the total current in the circuit will increase since the total resistance of the circuit has decreased.

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