In a potentiometer setup, if the known voltage is increased while keeping the length of the wire constant, what happens to the balance point?
Correct Answer: Balance point moves towards the positive terminal.
- Step 1: Understand that a potentiometer measures voltage by comparing it to a known voltage.
- Step 2: Recognize that the balance point is where the voltage across a certain length of wire equals the known voltage.
- Step 3: If the known voltage is increased, it means we need more voltage to reach balance.
- Step 4: Since the length of the wire is constant, a higher voltage will require a longer length of wire to achieve balance.
- Step 5: Therefore, the balance point will move towards the positive terminal of the potentiometer.
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