The tungsten bulbs of wattage $100 W$ and $60 W$ power work on $220 V$ potential difference. If they are connected in parallel how much current will flow in the main conductor?

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Solution

Potential remains same in the resistors when they are connected in the parallel.∴ Potential in both the bulbs will be same.

Now,

For First Tungsten Bulb,
Power $= 100 W .$
Potential $= 220 V .$
$P o w e r = P o t e n t i a l * C u r r e n t .$
Current $= \frac{100}{220}$
Current $= 0.45 A .$
For second Tungsten bulbs,
Power $= 60 W .$
Potential $= 220 V .$
Current $= \frac{60}{220} = 0.27 A .$
Now, Total current flowing = Current in 1st bulb + Current in 2nd bulb. $= 0.45 + 0.27 = 0.72 A .$
Hence, the total current flowing in the main conductor is $0.72 A$ .

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The tungsten bulbs of wattage 100 W and 60 W power work on 220 V potential difference. If they are connected in parallel how much current will flow in the main conductor?

The tungsten bulbs of wattage $100 W$ and $60 W$ power work on $220 V$ potential difference. If they are connected in parallel how much current will flow in the main conductor?