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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A voltage V0 is applied to a potentiometer whose sliding constant is exactly in the middle. A voltmeter V is connected between the sliding constant and one fixed end of the potentionmeter. If is assumed that the resistance of the voltmeter is not very high in comparison to the resistance of the potentiometer wire. What voltage will the voltmeter show : higher than, less than, or equal to V0/2?

A voltage V0 is applied to a potentiometer whose sliding constant is exactly in the middle. A voltmeter V is connected between the sliding constant and one fixed end of the potentionmeter. If is assumed that the resistance of the voltmeter is not very high in comparison to the resistance of the potentiometer wire. What voltage will the voltmeter show : higher than, less than, or equal to V0/2?

Figure shows a potentiometer circuit for comparison of two resistances. The balance point with a standard resistor R=10.0Ω is found to be 58.3 cm while that with the unknown resistance X is 68.5 cm. Determine the value of X. What might you do if you failed to find a balance point with the given cell of emf ϵ?