In the diagram, the resistance of the light bulb is 1 ohm and the resistor is 1 ohm. If the voltage source is 8 voltage, what is the current in the light bulb?
A2A
B1A
C4A正確答案
D8A
答案與詳解
燈泡與電阻器串聯,總電阻為1+1=2歐姆,依歐姆定律 I=V/R=8/2=4A。
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