Define electric power. Give its $SI$ unit.
(N/A) Electric power is defined as the rate at which electrical energy is consumed or dissipated in an electric circuit. Mathematically,it is the rate of doing work,given by $P = \frac{W}{t} = VI = I^2R = \frac{V^2}{R}$. The $SI$ unit of electric power is the watt $(W)$,which is equivalent to $1 \text{ joule per second} (J/s).$
Explore More
Similar Questions
The rating of an electric heater is $1100 \ W, 220 \ V$. Calculate its resistance when it operates at $220 \ V$. Also,calculate the energy consumed in $kWh$ in the month of November,if the heater is used daily for four hours at the rated voltage.
Medium
View SolutionHow does the use of a fuse wire protect electrical appliances?
Easy
View SolutionIn the circuit diagram shown,the two resistance wires $A$ and $B$ are of the same length and same material,but $A$ is thicker than $B$. Which ammeter,$A_{1}$ or $A_{2}$,will indicate a higher reading for current? Give a reason.
Medium
View SolutionWhat is the commercial unit of electric energy?
Easy
View SolutionThe unit $Joule/second$ $(J/s)$ is the unit of which of the following?
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo