You have two flashlights that operate on 1.50-V D batteries. The first flashlight uses two batteries in a chain, and the second uses five ba

Question

You have two flashlights that operate on 1.50-V D batteries. The first flashlight uses two batteries in a chain, and the second uses five batteries in a chain. Each flashlight has a current of 2.50 A flowing through its circuit. What power is being transferred to the bulb in each flashlight

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Tài Đức 3 years 2021-09-05T11:46:07+00:00 1 Answers 27 views 0

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  1. Calantha
    0
    2021-09-05T11:47:55+00:00
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    Answer:

    The first flashlight,

    P = 7.5 W

    The second flashlight,

    P = 18.75 W

    Explanation:

    P = VI……………… Equation 1

    Where P = Power, V = Voltage, I = current.

    For the first flashlight,

    Given: I = 2.5 A, and V = 1.5×2 (The first uses two battery in chain) = 3 V

    Substitute into equation 1

    P = 3(2.5)

    P = 7.5 W.

    For the second flash light,

    P = VI

    Given: I = 2.5 A, V = 1.5×5 ( The second uses five batteries in a chain) = 7.5 V

    Substitute into equation 1

    P = 2.5(7.5)

    P = 18.75 W.

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