Electrical (A6)Câu 72 / 120
In a wiring diagram, a component shown connected to ground provides:
a.The source of voltage
b.The return path for current back to the battery negative
c.Fuse protection
d.Signal amplification
Giải thích
Ground is the return path that completes the circuit back to the battery's negative terminal. A poor ground raises resistance and causes dim lights, erratic operation, or feedback. Diagrams use ground symbols to trace current return paths.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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