Why alloys are used to make standard resistors ?
No current flows between two charged bodies when connected, if they have the same
An electric iron consumes energy at a rate of $840\, W$ when heating is at the maximum rate and $360\, W$ when the heating is-at the minimum. The voltage is $220\, V$. What are the current and the resistance in each case ?
A conducting wire offers resistance to the flow of electrons because electrons repel each other in the wire.
The equivalent resistance between points $A$ and $B$ of the following electric circuit will be $.........$