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28 February, 11:16

Ellie has two wire circuits, each connected to its own 6 V battery. One circuit has a resistance of 0.80 Ω. The other circuit carries a 4.5 A current. Which circuit has greater resistance?

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  1. 28 February, 13:10
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    The second circuit with 4.5 A current has more resistance.

    Explanation:

    potential difference = 6 V

    resistance of first circuit=0.80 Ω

    for second circuit, current = i=4.5 A

    using Ohm's law V = i R

    6=4.5 R

    R=1.33 Ω

    So the second circuit has a greater resistance.
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