The heat produced by a $100\, watt$ heater in $2$ minute will be equal to
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(a) Energy $ = P \times t = 100 \times 2 \times 60 = 12000\,J = 12 \times {10^3}J$
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In the adjacent shown circuit, a voltmeter of internal resistance $R$, when connected across $B$ and $C$ reads $\frac{{100}}{3}\,V$. Neglecting the internal resistance of the battery, the value of $R$ is ................. $k \Omega$
In the circuit shown, the cell is ideal, with $emf$ $=$ $15$ $V$. Each resistance is of $3 $ $\Omega$ . The potential difference across the capacitor is.....$V$
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