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Give two examples for applications of he...

Give two examples for applications of heating effect of electric current

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(a) Electric fuse
(b) Electric water heater
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OSWAAL PUBLICATION-ELECTRICITY-TOPIC-2 ( Long Answer Type Questions )
  1. Establish a relationship to determine the equivalent resistance R of a...

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  2. Derive an expression for Joule's law of heating.

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  3. Give two examples for applications of heating effect of electric curre...

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  4. 100 J of heat is produced each second in a 4 Omega resistor. Find the ...

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  5. A wire of resistivity p is pulled to double its length. What will be i...

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  6. Draw a schematic diagram of a circuit consisting of a battery of three...

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  7. Two wires of equal length, one of copper and the other of manganin hav...

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  8. Derive an expression for the equivalent resistance of three resistors ...

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  9. Fuse of 3A, 5A and 10A are available. Calculate and select the fuse fo...

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  10. What is meant by the statement that the resistance of a wire is 1 Omeg...

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  11. Two identical resistors each of resistance 12 Omega are connected (i) ...

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  12. How is a voltmeter connected in the circuit to measure the potential d...

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  13. Explain the term : Heating effect of electric current.

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  14. Derive an expression for the heat produced by electric current and sta...

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  15. Why are electric bulbs filled with chemically inactive nitrogen or arg...

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  16. State Ohm's law. Give mathematical relation between potentW difference...

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  17. When a 12 V battery is connected across an unknown resistor there is a...

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  18. Two wires X and Y are of equal length and have equal resistances. If t...

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  19. Study the following current time graphs from two different sources. ...

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  20. Calculate the resistance of the wire using the graph.

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