In fig., AB is a potentiometer wire of length 10 m and resistance 2 Ω. With key (K) open the balancing length is 5.5 m. However, on closing key (K) the balancing length reduces to 5 m. The internal resistance of the cell (E1) is –

In fig., AB is a potentiometer wire of length 10 m and resistance 2 Ω

1.	In fig., AB is a potentiometer wire of length 10 m and resistance 2 Ω. With key (K) open the balancing length is 5.5 m. However, on closing key (K) the balancing length reduces to 5 m. The internal resistance of the cell (E1) is –
Answer» In fig., $A B$ is a potentiometer wire of length $10 m$ and resistance $2 Ω$ . With key $(K)$ open the balancing length is $5.5 m$ . However, on closing key $(K)$ the balancing length reduces to $5 m$ . The internal resistance of the cell $(E_{1})$ is –

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In fig., AB is a potentiometer wire of length 10 m and resistance 2 Ω. With key (K) open the balancing length is 5.5 m. However, on closing key (K) the balancing length reduces to 5 m. The internal resistance of the cell (E1) is –

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