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

Jul 30, 2018

Answer:

The power is $= 0.4 W$

Explanation:

The power is

$\text{Power (W) "="Voltage (V) " xx" Current (A)}$

$P = U I$

And

Ohm's Law is

$\text{Voltage (V)"= " Current (A) " xx " Resistance } \left(\Omega\right)$

$U = R I$

The voltage is $U = 2 V$

The resistance is $R = 10 \Omega$

The current is

$I = \frac{U}{R} = \frac{2}{10} = 0.2 A$

The power is

$P = 2 \times 0.2 = 0.4 W$