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Two conductors, one having resistance R and another 3R are connected in turn across a d.c. source. If the rate of heat produced in the two conductors is `Q_(1)` and `Q_(2)` respectively, then find their ratio.

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To find the ratio of the heat produced in two conductors with resistances R and 3R when connected across a DC source, we can follow these steps: ### Step 1: Understand the Power Formula The power (P) dissipated in a resistor when connected to a voltage (V) is given by the formula: \[ P = \frac{V^2}{R} \] where R is the resistance. ### Step 2: Calculate Power for Each Resistor ...
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MODERN PUBLICATION-CURRENT ELECTRICITY-REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)
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  2. A wire of resistance 5Omega is drawn out so that its length is increas...

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  3. What is the largest voltage you can safely put across a resistor marke...

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  4. Two conductors, one having resistance R and another 3R are connected i...

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  5. Out of the two bubls marked 25W and 100W, which one has the higher res...

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  6. A 150W and a 600W bulbs are joined in parallel to the mains. Out of th...

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  7. Write two special characteristics a wire of electric heater should hav...

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  8. The emf of a cell is always greater than its terminal voltage. Why? Gi...

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  9. Name the device used for measuring the internal resistance of a second...

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  10. Given three resistors of resistances 1 Omega, 2Omega and 3Omega. How w...

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  11. The plot of the variation of potential difference across a combination...

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  12. Two cells of emfs epsilon(1)and epsilon(2) and internal resistances ...

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  13. Obtain the condition for bridge balance in Wheatstone's bridge.

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  14. What is the condition for a Wheatstone bridge to be most sensitive?

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  15. What is the principle of working of meterbridge?

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  16. Assertion: A slide wire bridge is also called a metrebridge. Reason...

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  17. What do a voltmeter connected to two terminals of a cell read: the emf...

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  18. How can the sensitivity of a potentiometer be increased?

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  19. Assertion A potentiometer is preferred over that of a voltmeter for me...

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  20. Why do we prefer potentiometer with a longer bridge wire?

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