Question

Two lamps rated 100 W, 200 V and 10 W, 200 V are connected in parallel to 200 V supply. The total current through the circuit is

Answer 1

here is your answer buddy

Power = P = 100 W

Voltage = V = 220v

Resistance = R

P = V²/R

100 = 220 ×220/R

R  = 220 × 220/100

    = 484 Ω

==========================

Power = P = 10 W

Voltage = V = 220v

Resistance = R

P = V²/R

10 = 220 × 220/R

R = 220× 220/10

   =4840 Ω

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As the resistors are connected in parallel ,  

total resistance = 1/R

1/R = 1/484 + 1/4840

     =  4840 + 484/484×4840

     = 5324/2342560

R = 2342560/5324 = 440 ohms

      Total resistance = 440 Ω

I = current

V = IR

220 = I × 440

I = 220/440

  = 0.5 A

The current drawn is 0.5 A

hope it helps buddy

mark the brainliest