Embibe Experts Solutions for Chapter: Current Electricity, Exercise 1: Exercise

What is the relationship between potential difference across the terminals of a cell and emf of the cell in an open circuit?

A steady current is maintained in a linear conductor having a non-uniform cross-section. The quantity of charge flowing per second is:

A copper wire is connected across a battery. The current in the wire is found to be $0.5 \mathrm{A}$, when the key is closed. The number of free electrons that flow through any section of wire $10 \mathrm{s}$ is nearly:

A wire has resistance of $12$ ohms. It is bent to form a circle. The effective resistance between the ends of any of its diameter is

Average velocity of electron in electric field also known as _____.

A constant voltage is applied between the ends of a uniform metallic wire. The heat developed is doubled of both the length and radius of the wire are _____

The highest power and most precise resistors are _____ resistors.

When a battery is short-circuited, the terminal voltage is _____ .