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A voltmeter is connected across the terminals of a
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Answer #1

V = 15.0 V
R = 75 Ω
Let the internal resistance of the battery be r.

We know, V = I * R
11.3 = I * 75
I = 11.3/75
I = 0.151 A

Power = I^2 * R = 0.151^2 * 75
P = 1.71 W

(b)
15 - I*r = 11.3
15 - 0.151* r = 11.3
r = 24.5 Ω

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