Resistance and Power - Technical MCQs
Q1: How many connections does a rheostat have?A
1
B
2
C
3
D
4
ANS:B - 2 The most common way to vary the resistance in a circuit is to use a rheostat, a two-terminal variable resistor. For low-power applications (less than about 1 watt) a three-terminal potentiometer is often used, with one terminal unconnected or connected to the wiper. |
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