Question

in the circuit shown in figure the power developed in 6 ohm resistor is 24 what the power developed in 2 ohm resistor will be

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Answer 1

Answer:

2) 18 w

Explanation:

Let R1 = 6ohm

R2 = 12ohm

R3= 2ohm

So 6ohm resistor has power of 24W.

P= V^2/R

V^2 = 24 /6

V = root 144

V = 12V

So, I = V/R

I = 12/ 6

I1 = 2A

As resistor in parallel has constant voltage.

So, R2 will also have 12V voltage.

I = V/R

I = 12/12

I2= 1A

Therefore, Total current in the circuit = I1 + I2

I T = 2A + 1A

IT = 3A

So, R3 is in series.

Therefore, Voltage will be different

V = I R

V = 3 x 2 = 6V

So, P= V^2/ R

P = (6)^2/ 2

P = 36/2

P = 18 W

therefore, in 2ohm resistor Power will be 18W.