CT111 MIDTERM

An instrument used to measure the amount of resistance.

• voltmeter

• ohmmeter

• multi-tester

• ammeter

A voltage will influence current only if the circuit is:

• open

• insulated

• high resistance

• closed

Primary batteries, unlike secondary batteries, may be:

• charged once

• used once

• recharged over and over

• stored indefinitely

This type of variable resistor with 3 contacts is usually used to control voltage.

• light dependent resistor

• potentiometer

• rheostat

• preset

Which of the following is the component symbol for light emitting diodes?

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Which of the following is the component symbol for photo diodes?

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What are the unit and symbol for current?

• Ampere, A

• Coulomb, I

• Ampere, Q

• Ampere, I

The circuit symbol, represents what type of switch?

• 2-way changeover switch

• on-off switch

• dual on-off switch

• reversing switch

Which of the following circuit symbol is used to measure current?

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A switch is a device that:

• short circuits complex circuits

• holds a fuse

• has double poles

• opens or completes a current path