Engineering Board Exam Reviewer · Physics · medium
An ideal step-down transformer converts 220 V to 22 V. If the secondary current is 10 A, what is the primary current?
- 100.0 A
- 1.0 A
- 10.0 A
- 0.1 A
Answer
B. 1.0 A
Solution
For an ideal transformer VpIp = VsIs Ip = 22(10)/220 = 1.0 A.
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