Two resistors whose values are in the ratio $2 : 1$ are connected in parallel with one cell. The ratio of power dissipated is:

In the given figure, an ammeter reads $5 \, A$ and a voltmeter reads $40 \, V$. The actual value of resistance $R$ is

The storage battery of a car has an $emf$ of $12\; V$. If the internal resistance of the battery is $0.4\; \Omega,$ what is the maximum current (in $A$) that can be drawn from the battery?

Which arrangement of four identical resistances should be used to draw maximum energy from a cell of voltage $V$?

In the circuit shown in the figure,the resistance of the voltmeter is $6 \, k\Omega$. The voltmeter reading will be ................. $V$.

In the circuit shown,the resistances are given in ohms and the battery is assumed ideal with $emf$ equal to $3.0 \ V$. The resistor that dissipates the most power is