CBSE 12th Physics Outside Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

A cell of emf $$E$$ is connected across an external resistance $$R$$. When current '$$I$$' is drawn from the cell, the potential difference across the electrodes of the cell drops to $$\mathrm{V}$$. The internal resistance '$$r$$' of the cell is

$$\left(\frac{E-V}{E}\right) R$$

$$\left(\frac{E-V}{R}\right)$$

$$\frac{(E-V) R}{I}$$

$$\left(\frac{(E-V)}{V}\right) R$$

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Assertion (A) : The equivalent resistance between points A and B in the given network is 2R.

Reason (R) : All the resistors are connected in parallel

CBSE 12th Physics Delhi Set 1 - 2023 Physics - Current Electricity Question 13 English

Both Assertion (A) and Reason (R) are true and (R) is the correct explanation of (A).

Both Assertion (A) and Reason (R) are true and (R) is NOT the correct explanation of (A).

Assertion (A) is true and Reason (R) is false.

Assertion (A) is false and Reason (R) is also false.

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