Practice # 4 Circuit Analysis & Troubleshooting

Front

What must be done to a circuit component before using an ohmmeter to check its resistance?

Back

The circuit component must be isolated and the power source removed from the circuit.

Front

What is an unintentional low resistance path between two components in a circuit called?

Back

A short circuit.

Front

What is a circuit that is not a complete or continuous path for electron flow called?

Back

An open circuit.

Front

What happens to current flow when a short is created across a series circuit?

Back

It produces greater than normal current flow.

Front

What will a voltmeter read when connected across a shorted resistor in a series circuit?

Back

The voltmeter will read zero.

Front

Define 'open circuit'.

Back

An open circuit is a circuit that is not complete, preventing electron flow.

Front

Define 'short circuit'.

Back

A short circuit is an unintended low resistance path that allows current to bypass the intended circuit.

Front

What is the effect of a short circuit on the overall resistance of a circuit?

Back

A short circuit effectively reduces the overall resistance of the circuit.

Front

What is the purpose of an ohmmeter?

Back

An ohmmeter is used to measure the resistance of a component.

Front

What safety precaution should be taken before testing a circuit with an ohmmeter?

Back

Ensure the power source is removed and the component is isolated.