[8.1] Electricity
Chapter: [8.1] Electricity
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Name the physical quantity which defines the rate of flow of charge.
[8.1] Electricity
Chapter: [8.1] Electricity
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Which is bigger: a milliampere or a microampere?
[8.1] Electricity
Chapter: [8.1] Electricity
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Name the instrument used to measure the magnitude of the current flowing in the circuit.
[8.1] Electricity
Chapter: [8.1] Electricity
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What is responsible for the flow of current through a metallic conductor?
[8.1] Electricity
Chapter: [8.1] Electricity
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Which has a greater resistance: an ammeter or a voltmeter?
[8.1] Electricity
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.
[8.1] Electricity
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?
[8.1] Electricity
Chapter: [8.1] Electricity
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What is the function of a key in an electric current?
[8.1] Electricity
Chapter: [8.1] Electricity
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Define the electrical resistance of a metal. Write its SI unit.
[8.1] Electricity
Chapter: [8.1] Electricity
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How is a galvanometer different from an ammeter?
[8.1] Electricity
Chapter: [8.1] Electricity
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How is a voltameter different from a voltmeter?
[8.1] Electricity
Chapter: [8.1] Electricity
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Differentiate between:
Flow of electron and flow of conventional current.
[8.1] Electricity
Chapter: [8.1] Electricity
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Write the formula for speed of sound in a gas using Laplace correction.
[7] Sound
Chapter: [7] Sound
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Why does the flash of lighting reach earlier than the sound of thunder?
[7] Sound
Chapter: [7] Sound
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What are land and sea breezes? Explain with the help of a labeled diagram.
[5] Heat and Energy
Chapter: [5] Heat and Energy
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In cold countries, the water pipes are covered with poor conductors. Why?
[5] Heat and Energy
Chapter: [5] Heat and Energy
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Why does a thick glass tumbler crack when very hot water is poured in it?
[5] Heat and Energy
Chapter: [5] Heat and Energy
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Write a short note on Land Breeze and Sea Breeze.
[5] Heat and Energy
Chapter: [5] Heat and Energy
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The following diagrams illustrate three situations involving thermometers which are labeled A, Band C. In each situation the thermometers indicate different readings.
(i) What do you expect the approximate reading of the thermometer B and C would be? Give a reason for your answer.
(ii) How would the readings of A and B help you in calibrating a thermometer?
[5] Heat and Energy
Chapter: [5] Heat and Energy
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