In the given figure, there is a circuit of potentiometer of length A B = 10 m . The resistance per unit length is 0 . 1 Ω per cm . Across A B , a battery of emf E and internal resistance r is connected. The maximum value of emf measured by this potentiometer is:

Question

In the given figure, there is a circuit of potentiometer of length A B = 10 m . The resistance per unit length is 0 . 1 Ω per cm . Across A B , a battery of emf E and internal resistance r is connected. The maximum value of emf measured by this potentiometer is:, 5 V, 2 . 25 V, 6 V, 2 . 75 V

MARKS App · Accepted Answer

Maximum voltage that can be measured by this potentiometer will be equal to potential drop across A B , R AB = 10 × 0 . 1 × 100 = 100 ohm ∴ V AB = 6 20 + 100 × 100 = 6 × 100 120 = 5 V

Search any question & find its solution

Looking for more such questions to practice?