# Given the current i(t) and voltage v(t) of a circuit element, the power p(t) and energy w(t) are given by:

Given the current i(t) and voltage v(t) of a circuit element, the power p(t) and energy w(t) are given by:

### Right Answer is:

$w = \mathop \smallint \nolimits_0^t {\rm{\;}}pd\tau $ & p = v.i.t

#### SOLUTION

**Electric power** is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The units of power is Watts. It can be expressed as

P = VI

Where V is the voltage

I is the current

**Energy** is the capacity to do work. Energy is power integrated over time. The units of energy are Joules.

$E = \mathop \smallint \nolimits_0^t {\rm{\;}}pdt$