What would the overall resistance be in a series circuit if there’s an unknown R, 3Ω,3Ω and a current of 2A?

Question

What would the overall resistance be in a series circuit if there’s an unknown R, 3Ω,3Ω and a current of 2A?

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Neala 4 years 2021-07-20T20:08:18+00:00 1 Answers 32 views 0

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  1. Edana
    0
    2021-07-20T20:10:07+00:00
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    Answer:

    R + 6 ohms

    Explanation:

    The current is the same in all three resistors

    i = 2 amps

    The problem is that the total voltage is unknown.

    R = r

    R1 =3 ohms

    R2 = 3 ohms

    The voltage drop is E = I*R

    I = 2 amps

    R1 = 3 ohms

    R1 = 3 ohms

    E = 3*2 = 6 volts

    The second 3 ohm resistor also has 6 volts across it.

    The total is 12 volts so far. But we know nothing more on how to solve for R.

    All you can say is that the total resistance = R + 6 ohms

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