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(1) Two tungsten bulbs of power 50 W and 60 W work on 220 Vpotential difference. If they are connected in parallel, how muchcurrent will flow in the main conductor ?

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 = 50 W.Potential = 220 V

∵ Power = Potential × Current. ∴ Current = 50/220 Current = 0.22 A

For second Tungsten bulbs, Power = 60 W.Potential = 220 V.

∴ Current = 60/220 = 0.27 A

Now, Total current flowing = Current in 1st bulb + Current in 2nd bulb.= 0.22 + 0.27= 0.49 A

Hence, the total current flowing in the main conductor is 0.49 A

sorry its answer may be 0.49A

please read the question again



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