Electromagnetic Induction Concepts

The video tutorial explains Faraday's experiment on electromagnetic induction, detailing the setup and function of the galvanometer. It covers the definition of electromagnetic induction, the role of the galvanometer, and the effects of turning the switch on and off. The tutorial also discusses the impact of adjusting the rheostat and the function of the insulated iron core in transferring magnetic flux.

What is the primary purpose of Faraday's experiment setup?

• To observe chemical reactions

• To study electromagnetic induction

• To test gravitational forces

• To measure temperature changes

Which of the following best describes electromagnetic induction?

• The movement of electrons in a vacuum

• The creation of light in a vacuum

• The generation of EMF due to a change in magnetic flux

• The production of heat in a conductor

What causes the production of EMF in electromagnetic induction?

• A stable temperature

• A static electric charge

• A change in magnetic flux

• A constant magnetic field

What is one of the main functions of a galvanometer?

• To measure temperature

• To detect the presence of light

• To calculate speed

• To measure current and indicate its direction

How does a galvanometer indicate the direction of current?

• By changing color

• By vibrating

• By emitting sound

• By deflecting its pointer

Why does the galvanometer deflect when the switch is turned on?

• Because of electromagnetic induction

• Due to a change in temperature

• Because of gravitational pull

• Due to a chemical reaction

What happens to the galvanometer when the switch is turned off?

• It remains deflected

• It deflects to the same direction

• It deflects to the opposite direction and returns to center

• It stops working

What is the effect of adjusting the rheostat on the galvanometer?

• It changes the temperature

• It alters the magnetic flux, causing deflection

• It stops the current

• It increases the light intensity

What is the function of the insulated iron core in the experiment?

• To generate heat

• To conduct electricity

• To transfer magnetic flux between coils

• To store energy

Why is a soft iron core used in the experiment?

• Because it is a good conductor of electricity

• Because it can be easily magnetized and demagnetized

• Because it is lightweight

• Because it is inexpensive