the electric cell of internal resistance 0.5ohms delivers a current of 2 amperes when a resistance of 3 ohm is connected across it, find the

Question

the electric cell of internal resistance 0.5ohms delivers a current of 2 amperes when a resistance of 3 ohm is connected across it, find the electromotive force of the cell. Show all workings​

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Minh Khuê 4 years 2021-08-07T02:54:33+00:00 1 Answers 17 views 0

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  1. thienthi
    0
    2021-08-07T02:56:18+00:00
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    Answer:

    7 volts

    Explanation:

    Applying,

    E = IR+Ir……………. Equation 1

    Where E = electromotive force of the cell, I = current. R = External resistance, r = internal resistance.

    From the question,

    Given: I = 2 amperes, R = 3 ohm, r = 0.5 ohm

    Substitute these values into equation 1

    E = (2×3)+(2×0.5)

    E = 6+1

    E = 7 volts

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )