Electricity Questions and Answers updated daily – General Knowledge


Electricity Questions and Answers updated daily – General Knowledge



24 Electricity Questions and answers section with explanation for various online exam preparation, various interviews, General Knowledge Electricity online test. Electricity Questions with detailed description, explanation will help you to master the topic.

Electricity Questions

1. The resistance of a conductor is inversely proportional to its :



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Correct Ans:area of cross-section
Explanation:


2. The resistance of a conductor is directly proportional to :



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Correct Ans:length
Explanation:


3. Lamps of 40 watt 60 watt are connected in parallel, the total power of combination is



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Correct Ans:24 watt
Explanation:


4. Formula for electric power is



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Correct Ans:P=V I
Explanation:


5. In electric heating appliances, the material of heating element is



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Correct Ans:Nichrome
Explanation:


6. The relation between H ;I is called



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Correct Ans:Joule’s law
Explanation:


7. The correct relation between heat produced electric current flowing



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Correct Ans:HµI2
Explanation:


8. Heating of a current carrying conductor is due to



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Correct Ans:Loss of kinetic energy by electrons
Explanation:


9. When electric current flows through a conductor, it



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Correct Ans:Loose electrons
Explanation:


10. The total work done by an electrical appliance during its operation, is called electrical



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Correct Ans:Energy
Explanation:


11. In parallel combination of electrical appliances, total electrical power



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Correct Ans:Increases
Explanation:


12. Among which of the following resistance does not depend :



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Correct Ans:density
Explanation:


13. A battery of 12V is connected in series with resistors of 0.2 ohm , 0.3 ohm,0.4 ohm,0.5 ohm and 12 ohm. How much current would flow through the 0.3 ohm resistor



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Correct Ans:0.895A
Explanation:


14. A voltmeter is used to find p.d. in any electrical circuit which of the statement given below is true :



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Correct Ans:A voltmeter is a high resistance instrument and is connected in parallel circuit
Explanation:


15. Which of the following statement is not true, regarding the electrical set-up for the verification of Ohm's law:



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Correct Ans:The rheostat can only increase the resistance in electric circuit
Explanation:


16. The SI unit of resistance is :



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Correct Ans:Ohm
Explanation:


17. The obstruction offered by material of conductor to the passage of electric current is known as :



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Correct Ans:Resistance
Explanation:


18. The relation between potential difference (V) and current (I) was discovered by :



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Correct Ans:Ohm
Explanation:


19. The relation between potential difference (V) and current (I) is :



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Correct Ans:V ? I
Explanation:


20. The unit of potential difference is :



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Correct Ans:volt
Explanation:



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