Kiểm tra & Khắc phục sự cốCâu 491 / 521
Three resistors of 10 ohms, 20 ohms, and 30 ohms are wired in series. What is the total resistance the ohmmeter should read across the string?
a.5.45 ohms
b.10 ohms
c.60 ohms
d.0.183 ohms
Giải thích
Series resistances add: 10 + 20 + 30 = 60 ohms. Option a is the parallel result, and b/d ignore two of the resistors or invert the math.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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