Question

A battery supplies 150 W and 196 W power
to two resistors of 6 12 and 412 when they
are connected separately to it. The internal
resistance of the battery is​

Answer 1

Answer:

1 ohm

Explanation:

Let's write the formulae of power in terms of I and R

P = I²R

The 150 W, supplies 6 ohms

150 = I² × 6

6I² = 150

I² = 25

I = 5A

For the 196 W, 4 ohms

196 = I²4

I² = 49

I = 7 A

V = IR + Ir

Where r is the internal resistance.

We will have two equations for V :

V = 5 × 6 + 5r = 30 + 5r

V = 7 × 4 + 7r = 28 + 7r

Equating the two :

30 + 5r = 28 + 7r

2r = 2

r = 1

Answer 2

Answer:

i dont no

Explanation:

I don't no problem with