Exercise

Tell the odd one out. Give proper explanation.
Voltmeter, ammeter, galvanometer, thermometer.

Tell the odd one out. Give proper explanation.
Loudspeaker, microphone, electric motor, magnet.

Electromagnetic induction means

Give Scientific reason.
In the electric equipment producing heat e.g., iron, electric heater, boiler, toaster etc., an alloy such as Nichrome is used, not pure metals.

Which of the statement given below correctly describes the magnetic field near a long, straight current-carrying conductor?

Name the following diagrams and explain the concept behind them.

Identify the figures and explain their use.

An electric iron of $1100 \mathrm{W}$ is operated for $2 \mathrm{hrs}$ daily. What will be the electrical consumption expenses for that in the month of April? (The electric company charges $\mathrm{Rs} 5$ per unit of energy).