The potential differences required to pass a current of 0.5 A in a wire of resistance 20...?
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I=0.2A
P=20W
P=VI
V=P/I
V=20÷0.2
V=10V
~~HOPE IT WILL HELP YOU~~~~
P=20W
P=VI
V=P/I
V=20÷0.2
V=10V
~~HOPE IT WILL HELP YOU~~~~
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