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25 September, 21:43

what is the resistance of a car light bulb that conducts 0.025 A current when connected to a 12 V car accumulator? Is the current in the bulb steady?

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  1. 25 September, 21:57
    0
    R = 480 Ohm

    Yes, the current is steady since the power supply is a constant 12V (comming from the battery).

    Explanation:

    U=I*R

    R = U / I

    U = 12 V

    I = 0.025 A

    R = 12 / 0.025

    R = 480 Ohm
  2. 25 September, 22:09
    0
    Resistance=voltage/current

    =12/0.025

    =480 Ohms
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