Shri Vile Parle Kelavani Mandal’s
C.N.M. School & N.D. Parekh Pre-Primary
STD: VII
Electricity and Magnetism
2023-24
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1. Fill in the blanks:
(a) The strength of a magnet is strongest at its _________.
(b) __________ is the not a sure test for magnetism.
(c) Current electricity is the movement of __________.
(d) Like poles ______ and unlike poles ______.
2. State true or false :
(a) Two or more cells connected in series form a battery.
(b) In a battery the positive terminal of one cell is connected to the positive terminal of another cell.
(c) The circuit shown in the picture below is correctly represented by the diagram.
(d) The bulb will glow in the following circuit diagram.
4. The circles below represent compasses. In each circle, draw the needles of the compasses, using an arrow
to show the direction they point.
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3. Choose the correct option:
(a) Which direction should the magnetic field lines point at the end of the south pole of the bar magnet?
(b) If a bar magnet is carefully cut in half into two smaller magnets, they will each have
(c) The four diagrams below represent electromagnets connected to the terminals of a battery. In which diagram are the
magnetic poles correctly indicate?
(d) The magnet in the diagram is constructed from an iron core and a coil of wire connected to a battery.When
the switch is turned on, an electric current circulates through the wire.
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4. Explain the meaning of the following:
a. directive property of a magnet.
b. attractive property of a magnet.
5. Repulsion is the sure test of magnetism. Explain.
6. Answer the following questions:
(a) Name two sources of electricity
(b) Give two ways of increasing the magnetic field of an electromagnet.
(c) Differentiate between conductors and insulators.
(d) ‘’ Poles exist in pairs”. Explain the statement.
(e) State the function of the following in an electric circuit :
(i) resistor
(ii) connecting wires
(f) Name the components represented by the following symbols :
7. Tell whether each set of magnets will attract or repel
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8. Observe the magnet and its magnetic field and answer the following questions
STD-VII PHYSICS
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