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Conductivity and Resistivity

Filament resi...

Question

Filament resistance of an electric bulb is $660$ ohm. Potential difference of two points $220$ V. Find the current flowing through the filament.

A

2 A

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B

0.33 A

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C

2.33 A

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D

1.2 A

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Solution

The correct option is B $0.33 A$
According to ohm's law $V = I R$
$I = \frac{V}{R}$
Here, $V = 220 V$
$R = 660 Ω$
So current through filament $I = \frac{220}{660}$ = $0.33 A$

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