Effects of Electric Current

How did the first phone work?

What is a receiver in the phone?

What are the parts of a telephone?

How much heat is produced if the current is doubled?

How does an electric current develop a heating effect?

What is the relation between resistance and heating effect of a conductor?

Name the equation giving the heating effect of electric current?

What is the working mechanism of telephone?

Mention the factors affecting the heating effect of electric current.

Recall Thomas Edison's contribution in the field of science.

Describe the series of experiments conducted by Thomas Alva Edison which lead to the invention of the first bulb.

The electric heater is an application of the _____(heating/magnetic) effect of current.

Compute the heat generated while transferring 96000C of charge in one hour through a potential difference of 50 V.

If the current $I$ through a resistor is increased by 100% the increase in power dissipation will be (assume temperature remain unchanged) _____ %

Coils of heating devices are made up of________.

Which of the following devices work on the principle of the heating effect of electricity?

The electric _____ are made from the wires that melt and break quickly when large electric currents are passed through them.

An electric bulb wastes electricity because it produces _____ in addition to the light.

Which of the following device is inserted in an electric circuit to prevent the fire and damage to the buildings?

The _____ of an electric bulb gets heated when an electric current passes through it.