(1) A freely hanging piece of wood always points to North-south direction.

(2) Electromagnets are not only powerful but also permanent.

(3) A group of two or more cells is called a battery.

(4) Good conductors of electricity have free electrons.

(5) Earth’s magnetism resides deep in the Earth.

(6) A closed circuit means the switch is OFF.

(7) Electrons have a positive charge.

(8) Good conductors of electricity are bad resistors.

(9) Three bulbs connected in parallel circuit will always give dim light.

(10) Fuses can also be called switches for safety

(2) The core of an electromagnet is made of ______________.

(3) Wool is a ______________ conductor of electricity.

(5) Path along which current flows is called a ______________.

(6) Source of current in a torch is ______________.

(7) Electricity that does not move is called ______________.

(8) Fuse is best described as a ______________.

(9) A battery is made of ______________.

(10) In a circuit diagram zigzag line represents ______________.

(1) A sure test of magnetism is ______________.

(4) Electricity is conducted in liquids by motion of ______________.

(2) How will you test if a piece of iron is a magnet?

(5) Why electric switches should not be touched with wet hands?

(7) Name two uses of an electromagnet.

(9) What is a solenoid?

(1) What is a magnetic pole; how do they exist in pairs?

(3) What is an electromagnet?

(4) How can we know the polarity of an electromagnet?

(6) What is an electric circuit?

(8) How is an ion formed?

(10) What is magnetic declination of Earth?

(3) Describe an experiment to show that like poles of a magnet repel.

(6) How good conductors conduct electric current?

(10) Draw a circuit diagram having a battery, a switch, two bulbs and a fuse.

(1) State the laws of magnetism and how can we test them?

(2) How can we differentiate between an electromagnet and a permanent magnet?

(4) How can we make an electromagnet more powerful?

(5) What are primary cells?

(7) Why electrical connections in house wiring is done in parallel circuit?

(8) Describe the working of an electric bell.

(9) Differentiate between a series circuit and a parallel circuit?

It comes to rest pointing geographic north and south.

Negative terminal of the next cell

An electromagnet

There is magnetic field of the magnet

An automatic switch

Its magnetism is permanent.

Does not glow

They all are rechargable.