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Calculate the potential difference across a `20 Omega` resistor carrying a current of 0.1 A.

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In given circuit diagram two resistors are connected to a 6V supply. A third resistor is now connected in a parallel with 6 Omega resistor will the potential difference across the 8 Omega resistor the larger, smaller or the same as before? Explain the reason for your answer.

Choose correct alternative. Two resistance of 3 Omega and 2 Omega are connected in series to a cell of emf 3 volt and internal resistance of 1 Omega . The potential difference across 3 Omega resistance will be A. 1 volt B. 0.5 volt C. 1.5 volt D. 2 volt

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Calculate the heat generated in joule in a coil when potential difference of 30 volts is applied across it. The current of 0.8 A is passed for 4 minutes.

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NAVNEET PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. A wire carries a current of 0.1 A for 20 seconds. If the potential dif...

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  2. A wire carries a current of 0.1 A for 10 seconds. If the work done in ...

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  3. Calculate the potential difference across a 20 Omega resistor carrying...

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  4. A conductor carries a current of 0.4 A when a potential difference of ...

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  5. A potential difference of 25 V is applied across a conductor of resist...

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  6. The resistance of a conductor is 10 ohm. Find the current through it w...

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  7. The resistance of a wire of length 15.7 m and radius 0.5 mm is 10 Omeg...

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  8. A wire has radius 0.5 mm and length 62.8 m. If the resistivity of the ...

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  9. A wire has length 10 m and resistance 20 Omega If the resistivity of t...

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  10. If the resistance of wire A is three times the resistance of wire B an...

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  11. Calculate the length of a wire of diameter 1 mm needed to prepare a co...

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  12. Two wires have lengths in the ratio 1 : 9 and diameters in the ratio 1...

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  13. A wire of resistance 1000 Omega is uniformly stretched so that its len...

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  14. Find the effective resistance of the series . combination of three res...

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  15. Choose the correct alternative and write it along its allotted alphabe...

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  16. Find the effective resistance of the parallel combination of three res...

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  17. Four resistors of resistances 5 Omega each are connected in parallel. ...

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  18. If two resistors are connected in series, the total resistance is 100 ...

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  19. If two resistors connected in parallel, the effective resistance of th...

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  20. How will you connect three resistors of resistances 3 Omega each to ob...

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