Which of the following is not equal to watt?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The unit of power is the watt $(W)$.Power is defined as the rate of doing work,so $P = \frac{W}{t}$,which gives the unit $	ext{Joule/second}$.Fro

Vedclass · Accepted Answer

Ampere/volt

Vedclass · Answer

(D) The unit of power is the watt $(W)$.Power is defined as the rate of doing work,so $P = \frac{W}{t}$,which gives the unit $	ext{Joule/second}$.From the electrical power formula $P = VI$,the unit is $	ext{Ampere} 	imes 	ext{volt}$.Using Ohm's law $V = IR$,we can substitute $V$ to get $P = I(IR) = I^{2}R$,which gives the unit $	ext{Ampere}^{2} 	imes 	ext{ohm}$.However,$	ext{Ampere/volt}$ is the unit of conductance (Siemens),not power.Therefore,the correct option is $D$.

Similar Questions

Two conductors made of the same material are connected across a common potential difference. Conductor $A$ has twice the diameter and twice the length of conductor $B$. The power delivered to the two conductors $P_A$ and $P_B$ respectively is such that $P_A/P_B$ equals to

When a current flows through a wire of resistance $R$ under a constant potential difference,the heat produced by the current is inversely proportional to:

You are given three bulbs of $25\, W$,$40\, W$,and $60\, W$. Which of them has the lowest resistance?

The amount of heat produced in a resistor when a current is passed through it can be found using

From where does electrical power derive? Explain it.

Vedclass Test Series

Exam Paper Generator

Online Exam Module