Four resistances are connected in a circuit in the given figure. The electric current flowing through $4\, ohm$ and $6\, ohm$ resistance is respectively
So the current in the circuit $ = \frac{{20}}{5} = 4\,ampere$
Hence the current flowing through each resistance $= 2\,ampere$.
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A torch bulb rated as $4.5\, W, 1.5\, V$ is connected as shown in the figure. The $e.m.f.$ of the cell needed to make the bulb glow at full intensity is ............. $V$
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