Given:
The electric motor transforms electrical energy,
[tex]E=125\text{ J}[/tex]time taken in this transformation is,
[tex]\begin{gathered} t=3\text{ m} \\ =3\times60\text{ s} \\ =180\text{ s} \end{gathered}[/tex]To find:
The power of the motor
Explanation:
Power is the rate of change in energy. So,
[tex]\begin{gathered} P=\frac{E}{t} \\ =\frac{125}{180} \\ =0.69\text{ W} \end{gathered}[/tex]Hence, the power is 0.69 W.
