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What does a negatively charged body signify?
Chapter: [8.1] Electricity
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What is the value of charge on a body which carries 100 excess electrons?
Chapter: [8.1] Electricity
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What do you mean by the term neutral point?
Chapter: [8.2] Magnetism
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What is the significance of a neutral point?
Chapter: [8.2] Magnetism
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What is the resultant magnetic field at a neutral point?
Chapter: [8.2] Magnetism
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What is the number of electrons that would flow per second through the cross-section of a wire when 1 A current flows in it?
Chapter: [8.1] Electricity
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0.7 C charges passes through a cross-section of a conductor in 7 s. Find the current.
Chapter: [8.1] Electricity
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Different bars are brought near each pole of a compass needle. Complete the following table:
| Nature of bar | Action on the compass needle | |
| North pole | South pole | |
| (i) Glass | No action | __________ |
| (ii) _________ | Attracted | Attracted |
| (iii) North pole of a bar magnet | __________ | ___________ |
| (iv) The south pole of a bar magnet | __________ | repulsion |
Chapter: [8.2] Magnetism
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Name the physical quantity which defines the rate of flow of charge.
Chapter: [8.1] Electricity
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Which is bigger: a milliampere or a microampere?
Chapter: [8.1] Electricity
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Name the instrument used to measure the magnitude of the current flowing in the circuit.
Chapter: [8.1] Electricity
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What is responsible for the flow of current through a metallic conductor?
Chapter: [8.1] Electricity
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Which has a greater resistance: an ammeter or a voltmeter?
Chapter: [8.1] Electricity
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Find the number of electrons that would flow per second through the cross-section of a wire when 1 A current flows in it.
Chapter: [8.1] Electricity
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A current of 4.5 A flows through a conductor for 2.5 s. What amount of charge passes through the conductor?
Chapter: [8.1] Electricity
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What is the function of a key in an electric current?
Chapter: [8.1] Electricity
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Define the electrical resistance of a metal. Write its SI unit.
Chapter: [8.1] Electricity
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How is a galvanometer different from an ammeter?
Chapter: [8.1] Electricity
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How is a voltameter different from a voltmeter?
Chapter: [8.1] Electricity
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