Electrical (A6)第 70 / 120 题
Power (watts) in an electrical circuit is calculated by:
a.Voltage multiplied by current
b.Voltage divided by resistance
c.Current divided by voltage
d.Resistance multiplied by voltage
解析
Electrical power equals voltage times current (P = E x I). A 12-volt circuit drawing 5 amps consumes 60 watts. This relationship helps size fuses, wiring, and components for their load.
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