Calculate the amount of charge flowing in $2$ minutes in a wire of resistance $10\,\Omega$ when a potential difference of $20\,V$ is applied between its ends.

Consider a circuit where a cell of emf $E_0$ and internal resistance $r$ is connected across the terminals $A$ and $B$ as shown in the figure. The value of $R$ for which the power generated in the circuit is maximum is given by

If the rheostat slider were to move from the extreme right to the far left,how will the reading of voltmeter $V_1$ change?

$A$ battery consisting of $6$ cells,each with an internal resistance of $0.5\, \Omega$ and an $e.m.f.$ of $2\, V$,is being charged by a $220\, V$ $D.C.$ mains using an external resistor of $10\, \Omega$. The charging current is: (in $, A$)

Of the two bulbs in a household circuit,one glows brighter than the other. Which of the two bulbs has a larger resistance?

To determine the resistance $(R)$ of a wire,a circuit is designed as shown below. The $V-I$ characteristic curve for this circuit is plotted for the voltmeter and the ammeter readings as shown in the figure. The value of $R$ is . . . . . . . $\Omega$.