Please select a subject first
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Calculate the charge passing through a lamp in 2 minutes if the current is 3A.
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What is the connection between electricity and magnetism?
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What are the factors that determine the strength of the magnet?
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The strongest natural magnet is ______.
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Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
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The pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
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The magnetic poles always exist in pairs.
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Define the terms magnet and magnetism.
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Define natural magnet.
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Define artificial magnet.
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Define electromagnet.
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Give the uses of magnets in everyday life.
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In which of the following, chemical energy is converted into heat energy?
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On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
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The sum of the kinetic and potential energy is called the ______ of the molecules.
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Match the following:
| Column A | Column B | ||
| 1. | Heat | a. | Heat gained or lost in the change of state without any change in temperature |
| 2. | m × L. | b. | Heat gained or lost when there is no change of state |
| 3. | Temperature | c. | Form of energy |
| 4. | m × s × t | d. | SI unit of specific latent heat |
| 5. | J/Kg | e. | degree of hotness or coldness |
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Heat gained by a body depends upon which factors?
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