Question

5. Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of
2 ohms in series with a combination of two resistors (4 ohms each) in parallel and a voltmeter
across the parallel combination.​

Answer 1

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Total resistance for parallel combination of 4Ω resistors can be calculated as follows :

• R1 = 1/4 + 1/4

• = 1/2

• or, R=2Ω

Thus resistance of parallel combination is equal to resistance of resistors in series . So , potential difference across 2Ω resistance will be same as potential difference across the other two resistors which are connected in parallel.

Answer 2

Answer:

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 ohms in series with a combination of two resistors (4 ohms each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 ohms resistor be the same as that across the parallel combination of 4 ohms resistors? Give reasons.

Make a rough sketch of the circuit using the material given with proper connection, then solve it.

Explanation:

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