| (i) It changes the voltage across a fixed resistor. |
| (ii) It changes the resistance across the fixed resistor. |
| (iii) It changes the current flowing through the fixed resistor. |
A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i) and (iii)
D) All the three
Correct Answer: C
Solution :
The variable resistor is adjusted so that the voltage across the variable resistor and the fixed resistor will change. The total resistance in the circuit will change leading to a change in the current flowing through the fixed resistor.
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