Two batteries of e.m.f. 4 V and 8 V with internal resistances 1Ω and 2Ω are connected in a circuit with a resistance of 9Ω as shown in figure. The current and potential difference between the points P and Q are

Question:

Options :

a)1/3A and 3V
b)1/6A and 4V
c)1/9A and 9V
d)1/2 A and 12V

Answer :

a)1/3A and 3V

Answer Steps :

Step;-1

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Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

If a body is executing simple harmonic motion then

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