Question

what is power of torch bulb rated at 2.5v and 500mA?​

Answer 1

we have,P=VI

=2.5* 500/1000 (as 1 mA= 1/1000 A)

=25/10 * 1/2

=5/4 Watt = 1.25 W

hope,this helps!

Answer 2

$\huge\rm\underline{\underline{\pink{Answer}}}$

It measures the work done n

per unit charger.

It is defined as the difference in

electric potential between two points in an electric field,equal to the work

done per unit quantity of charge in moving it from one point to another

in an electrostatic field