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In the a.c circuit above, the current value is

Physics
JAMB 2000

In the a.c circuit above, the current value is

  • A. 0.58 A
  • B. 3.00 A
  • C. 4.00 A
  • D. 6.67 A
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Correct Answer: Option C
Explanation

Impedance Z = \(\sqrt{R^2 + X^2}\)
= \(\sqrt{(30)^2 + (40)^2}\)
∴ Z = \(\sqrt{2500}\) = 50\(\Omega\)

But current I = \(\frac{V}{Z}\) = \(\frac{200}{50}\)  = 4.00 A

 

There is an explanation video available below.


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Explanation Video

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