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JAMB Physics 2000 Question 46

Question 46

Alternating Current Circuits

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

Diagram for this question
  1. A.6.67 A
  2. B.4.00 A
  3. C.3.00 A
  4. D.0.58 A
Show the answer and explanation

Answer: B (4.00 A)

Explanation

Impedance Z = √(302 + 402) = 50 Ω, so I = V/Z = 200/50 = 4.00 A.