How much power is produced if a voltage of $2 V$ $2 V$ is applied to a circuit with a resistance of $40 Omega$ ?

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Answer 1 · 2018-07-02T21:55:35

$0.1$ Watts

Power $(P)$ produced in a circuit of resistance $R=40 \Omega$ when a voltage $V=2 V$ is applied is

$P=VI=V(V/R)=\frac{V^2}{R}$

$=\frac{2^2}{40}$

$=0.1 \ W$

Answer 2 · 2018-07-03T04:34:34

$0.1$ watts.

Power here is given by the equation:

$P=V^2/R$

where:

$P$ is the power produced in watts

$V$ is the voltage in volts

$R$ is the resistance in ohms

So, we get:

$P=(2 \ "V")^2/(40 \ Omega)$

$=(4 \ "V"^2)/(40 \ Omega)$

$=0.1 \ "W"$

How much power is produced if a voltage of 2 V2V2 V is applied to a circuit with a resistance of 40 Omega40 Omega?