Kiểm tra & Khắc phục sự cốCâu 492 / 521
Two 20 ohm resistors are connected in parallel. What total resistance will an ohmmeter read?
a.10 ohms
b.40 ohms
c.20 ohms
d.400 ohms
Giải thích
For two equal parallel resistors, the total is half of one: 20 ohms / 2 = 10 ohms. Option b is the series total, c is a single resistor, and d multiplies them.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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