Question

A 10 Ω resistor and a 20 Ωresistor are connected in parallel with a power supply. If the power dissipated by the 10 Ω resistor is P, what is the power dissipated by 20 Ω resistor?

Answer 1

Answer:

ans is stopped 2p.

and

power is passes is p/2.

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Answer 2

Given: 10 Ω and 20 Ω are connected in parallel with a power supply. Power dissipated by 10 Ω resistor is P.

To find: Power dissipated by 20 Ω resistor.

Explanation: Since the resistors are connected in parallel with each other, the potential across them will be constant.

The formula of power that is used when potential is constant is:

$\frac{ {v}^{2} }{r}$

where r is resistance.

Since, power dissipated across 10Ω is P

=> P= V^2/10

=> 10P= V^2

Now, power dissipated across 20Ω= V^2/20

But, V^2= 10P

Therefore, power across 20Ω= 10P/20

=P/2

Therefore, the power dissipated across 20 Ω will be P/2.