हिंदी

Study the circuit diagram in the figure, and hence, calculate the internal resistance of the cell.

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प्रश्न

Study the circuit diagram in the figure, and hence, calculate the internal resistance of the cell.

संख्यात्मक
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उत्तर

\[E = 1.5\text{ V};\ V = 1.2\text{ V};\ R_1 = 3\text{ Ω};\ R_2 = 6\text{ Ω};\ r = ?\]

The external resistance is

\[R = \frac{R_1 R_2}{R_1 + R_2}\]

\[= \frac{3 \times 6}{3 + 6}\]

\[= 2\text{ Ω}\]

\[r = \frac{R(E - V)}{V}\]

\[= \frac{2(1.5 - 1.2)}{1.2}\]

\[= \frac{2 \times 0.3}{1.2}\]

\[= 0.5\text{ Ω}\]

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अध्याय 7: Electric Circuits, Resistance and Ohm's Law - NUMERICAL PROBLEMS ON OHW'S LAW [पृष्ठ १७०]

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गोयल ब्रदर्स प्रकाशन A New Approach to ICSE Physics [English] Class 10
अध्याय 7 Electric Circuits, Resistance and Ohm's Law
NUMERICAL PROBLEMS ON OHW'S LAW | Q 2. | पृष्ठ १७०
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