How much power is produced if a voltage of #2 V# is applied to a circuit with a resistance of #10 Omega#?

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Answer 1 · 2018-07-30T13:24:09

The power is #=0.4W#

The power is

#"Power (W) "="Voltage (V) " xx" Current (A)"#

#P=UI#

And

Ohm's Law is

#"Voltage (V)"= " Current (A) " xx " Resistance "( Omega)#

#U=RI#

The voltage is #U=2V#

The resistance is #R=10 Omega#

The current is

#I=U/R=2/10=0.2A#

The power is

#P=2xx0.2=0.4W#