Questions in Short/Long Answer Questions

Q1) State two properties of a bar magnet.

Q2) How to test whether a given rod is a magnet or not?

Q3) How will you test whether a given rod is made of iron or not?

Q4) YOu are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them?

Q5) You are given a magnet. How will you use it to find north-south direction at a place?

Q6) Describe a simple experiment to illustrate that like poles of two magnets repel each other while the, unlike poles, attract.

Q7) 'Poles exist in pair" Comment on this statement.

Q8) What is a magnetic compass? State its use

Q9) Explain the meaning of the term magnetic field.

Q10) What is an electromagnet?

Q11) NAme the material of an electromagnet.

Q12) Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure.

Q13) You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horseshoe electromagnet.

Q14) Name two factors on which the strength of magnetic of an electromagnet depends.

Q15) Name two factors on which the strength of the magnetic field of an electromagnet depends.

Q16) State two common uses of electromagnets.

Q17) NAme a domestic device in which an electromagnet is used.

Q18) Draw a neat and labelled diagram of an electric bell and describe its working.

Q19) THe incomplete diagram of an electric bell is given in the figure. Complete the diagram and the label it's different parts

Q20) What is a declination? Draw a diagram to show the angle between the declination and true direction of geographic north/

Q21) Define the term current.

Q22) Name four appliances which work using electricity

Q23) Name two sources of electricity.

Q24) What is a battery?

Q25) What is an electric circuit?

Q26) Describe an experiment to show that electricity flows only if the circuit is complete and it does not flow if the circuit is incomplete.

Q27) You are provided with a torch bulb, a cell and two plastic-coated f metal wires. Draw a diagram to show a complete circuit to light the bulb.

Q28) In which of the following case the bulb will glow:

1. Only one terminal of a cell is joined with a metal wire to one terminal of the bulb.

2. Both terminal of the bulb is joined with two metal wires to one terminal of the cell.

3. One terminal of the cell is joined to one terminal of the bulb and other terminal of the cell to the other terminal of the bulb.

Q29) Distinguish between conductors and insulators of electricity. Give reasons

Q30) Select conductors and insulators from the following:

Glass, silver, copper, wood, paper, pure water, impure water, aluminium, iron, leather, plastic, steel, human body and ebonite.

Q31) The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer.

Q32) The diagram given below shows a bulb connected with a cell having terminals A and B. Mark the direction of current in the bulb.

Q33) State the function of each of the following in an electric circuit and draw its symbolic representation: Switch and Cell

Q34) Draw a circuit diagram for a bulb connected to a cell with a switch. Mark arrow in the diagram to indicate the direction of flow of current.

Q35) In which arrangement are the appliances connected in the electric circuit of out homes, Series or parallel? Give reasons

Q36) State two precautions that you must take when switching on an electric circuit.