Engineering Board Exam Reviewer · Physics · hard
A series RL circuit has R = 30 and XL = 40 connected to a 220 V AC supply. What is the current?
- 3.14 A
- 7.33 A
- 4.40 A
- 22.00 A
Answer
C. 4.40 A
Solution
Z = R2 + XL2 = sqrt(900 + 1600) = 50 . I = V/Z = 220/50 = 4.40 A.
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