A circuit has a current of 2 A. If the resistance in the circuit decreases to one-fourth of its original amount while the voltage ema

Question

A circuit has a current of 2 A. If the resistance in the circuit decreases to one-fourth of its original amount while the voltage
emains constant, what will be the resulting current?
0.5 A
2A
4A
BA

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Trung Dũng 6 months 2021-07-15T10:18:22+00:00 2 Answers 6 views 0

Answers ( )

    0
    2021-07-15T10:19:24+00:00

    Answer:8a

    Explanation:

    0
    2021-07-15T10:20:20+00:00

    Answer:

    two ampheres

    Explanation:

    the formula for calculating voltage is V=IR so if the current which is I is 2 and the resistance which is R is decreased to one forth then we will say

    R=x multiplied by 1/4=x/4

    V=2x/4 cross multiply then we have

    since the voltage is constant then it is=1

    so 4=2x divide both sides by 2 we then get 2 as our answer

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )