Voltage, Current and Resistance – 7

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7. A two-terminal variable resistor is known as a ________.

(a) potentiometer
(b) thermistor
(c) rheostat
(d) wiper

Answer
Answer : (c)
Explanation
Explanation :

Potentiometer: Adjustable resistor has 3 terminals.
Rheostat: Adjustable resistor has 2 terminals.
Thermistor: Change resistance when temperature changes.
Wiper : Sliding contact in a Potentiometer.

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