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An electric lamp of resistance $20 ohm$ and a conductor of resistance $4 ohm$ are connected to a $6 V$ battery, as shown in the circuit given below.

Calculate the total resistance of the circuit.

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16 ohm

20 ohm

24 ohm

5 ohm

answer is C.

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Detailed Solution

An electric lamp of resistance

20 ohm

and a conductor of resistance

4 ohm

are connected to a

6 V

battery , then the total resistance of the circuit is

24 ohm .

Here, we can say that both the resistances are connected in series in the circuit. So, the equivalent resistance of two resistance connected in series is the sum of two resistances. Therefore, the equivalent resistance of the circuit will be

20 + 4 = 24 ohm

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