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16 August, 03:41

R1=3 ohms

R2=6 ohms

R4=18 ohms

R5 = 15 ohms

R5=9 ohms

90 volts

What is the current running through the entire circuit?

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Answers (1)
  1. 16 August, 03:49
    0
    Answer: current I = 1.875A

    Explanation:

    If the resistors are connected in series,

    Then the equivalent resistance will be

    R = 6 + 18 + 15 + 9

    R = 48 ohms

    Using ohms law

    V = IR

    Make current I the subject of formula

    I = V/R

    I = 90/48

    I = 1.875A

    And if the resistors are connected in parallel, the equivalent resistance will be

    1/R = 1/6 + 1/18 + 1/15 + 1/9

    1/R = 0.166 + 0.055 + 0.066 + 0.111

    R = 1/0.3999

    R = 2.5 ohms

    Using ohms law

    V = IR

    I = 90/2.5

    Current I = 35.99A
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