Basic Electricity 1 Worksheet #2 Chapter 2

The main function of a resistor is to limit the amount of current or produce a desired drop in voltage.

• True

• False

The two main characteristics of a resistor are its resistance in ohms and its tolerance in mhos

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• False

Metal-film resistors are made of finely divided carbon or graphite mixed with a powdered insulating material

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• False

A thermistor is a thermally sensitive resistor whose resistance value changes with changes in operating temperature.

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• False

A resistor that is color-coded red, green, red has a value of 2500 ohms.

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• False

The Amount by which the actual resistance can differ from the color-coded value is the positive temperature coefficient.

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• False

Zero-ohm resistors are commonly found on printed circuit boards.

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• False

Variable resistors can be wire-wound or carbon type.

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• False

A decade resistance box is typically used a potentiometer.

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• False

A rheostat has two terminals and a potentiometer has three terminals.

• True

• False