When a ceiling fan is connected to the circuit of the solar panel, the fan does not rotate. Why?

When a magnetic compass is placed near a circuit in which an electric current is flowing, its needle deflects. Why?

An electromagnet is used in the electric bell. Give reason.

The frequency of a.c. in our country is 50 Hz, what does it mean?

Draw the time graph of direct current and alternating current.

Maxwell's right-hand thumb rule shows the direction of the magnetic field produced when an electric current flows through a straight wire. Explain.

Maxwell's right-hand grip rule to find the direction of magnetic field lines of force around a solenoid. Explain.

What is the magnetic effect of current?

How can the magnetic field produced around straight current carrying be demonstrated by using iron dust, cardboard, and conducting straight wire? Explain it.

Draw the magnetic field developed around a straight current-
carrying wire.

What is a Solenoid? Draw a picture showing the magnetic field developed around a solenoid.

Write two uses of the solenoid.

A permanent magnet cannot be used in the electric bell, why?

Prepare a research report on any two sources of electricity in Nepal (Hydro power station, Solar power plant) including their capacity, type of electricity produced, and transmission.

What is the frequency of DC? Why?

Write the unit of current electricity and pressure.

Which of the following is the source of AC?

What amount of current can flow in the kettle written with 750 watt and 220 V?

Which scientist discovered the magnetic effect of electric current?