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Standard IX

Physics

Equivalent Resistance in Series Circuit

When a potent...

Question

When a potential difference of $100 V$ is applied between $M$ and $N$ in the following arrangement of resistors, the power dissipated is $50 W$ . The value of $R$ is:

250 Ω

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200 Ω

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100 Ω

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50 Ω

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Solution

The correct option is C $100 Ω$
Efficient resistance between $M$ and $N = 2 R$ .
$P = \frac{V^{2}}{2 R} \Rightarrow R = \frac{v^{2}}{2 p} = \frac{100^{2}}{2 \times 50} = 100 Ω$

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When a potential difference of 100V is applied between M and N in the following arrangement of resistors, the power dissipated is 50W. The value of R is:

The correct option is C 100ΩEfficient resistance between M and N=2R.P=V22R⇒R=v22p=10022×50=100Ω

When a potential difference of $100 V$ is applied between $M$ and $N$ in the following arrangement of resistors, the power dissipated is $50 W$ . The value of $R$ is:

The correct option is C $100 Ω$
Efficient resistance between $M$ and $N = 2 R$ .
$P = \frac{V^{2}}{2 R} \Rightarrow R = \frac{v^{2}}{2 p} = \frac{100^{2}}{2 \times 50} = 100 Ω$