Question

b. Two 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 con-
ductor?
​

Answer 1

Answer:

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=100W.

Potential=220V.

Power=Potential∗Current.

Current=

220

100

Current=0.45A.

For second Tungsten bulbs,

Power =60W.

Potential =220V.

Current =

220

60

=0.27A.

Now, Total current flowing = Current in 1st bulb + Current in 2nd bulb.=0.45+0.27=0.72A.

Hence, the total current flowing in the main conductor is 0.72A.

Explanation:

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