Electric Current and Power

IMPORTANT

Electric Current and Power: Overview

This topic covers concepts, such as, Electric Current, Unit of Electric Power, Electromagnetic Induction & Application of Magnetic Effects of Current etc.

Important Questions on Electric Current and Power

EASY
IMPORTANT

Which of the following appliances makes use of the electric current's heating effect?

HARD
IMPORTANT

Which of the following factor(s) is/are involved on which resistance of a conductor depends?

EASY
IMPORTANT

Which of the following does not affect the conductor's resistance?

EASY
IMPORTANT

One kilowatt-hour is equivalent to _____ kilojoules.

EASY
IMPORTANT

Which of the following statements about one kilowatt-hour is(are) correct?

A. It is commonly used as a billing unit for energy delivered to consumers by electric utilities.

B.  ​It is equal to 3600 kilojoules.

C. It is a unit of Power.

 

EASY
IMPORTANT

1 kWh (Kilo Watt Hour) is equivalent to _____ mega Joules.

EASY
IMPORTANT

One Kilowatt hour is a unit of which of the following physical quantities?

EASY
IMPORTANT

The condition for the validity of Ohm's law is that the

EASY
IMPORTANT

Which of the following is a cgs unit of power?

EASY
IMPORTANT

Which of the following is a unit of power?

EASY
IMPORTANT

Which type of magnet is used in an electric generator?

EASY
IMPORTANT

Which of the following appliances work on the principle of electromagnetism?

EASY
IMPORTANT

Which of the following appliances work on the principle of electromagnetic induction?

EASY
IMPORTANT

Which of the following law states that a moving conductor coil produces an induced EMF?

EASY
IMPORTANT

The induced charge is independent of which of the following factors in an electromagnetic induction?

EASY
IMPORTANT

Who discovered electromagnetic induction?

EASY
IMPORTANT

Magnetism is lost when an external source of the magnetic field is removed. This type of magnet is known as _______.

EASY
IMPORTANT

Electromagnets require which of the following source to act as a magnet?

EASY
IMPORTANT

Which of the following magnet emits a magnetic field without the influence of an external magnetic source or electricity?