Question

Ten 60w 220v bulbs are connected in series to 220v supply.Power consumed in the circuit is

Answer 1

Answer:

There is a possibilty of two chances-

* Bulbs are connected in Series connection in the Circuit.

* Bulbs are connected in Parraled Connection in the circuit.

For Series Connection -

We have to find the resistance , for it the formula is :- P = V²÷R

Given V= 220V, P= 60W  

Therefore , R = V² / P

                      = 48400/60

                      = 806.66 ohm

Now for 10 Bulbs resistance is = 8066.6 ohm

Now P = 48400/8066.6 W

            =6.0004 W

Total power for 10 bulbs.

For Parallel Connection:-

R = R1 * R2 * .......* R10/ R1 + R2 + .......+ R 10

   = 1.007e15 ohm

   

Therefore P = V²/R

                    = 48400/1.007e15

                     = 4.004e-11 W

Answer 2

Answer:

answer is 6

Explanation:

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