ECAT Physics Current Electricity Online Test

Physics Current Electricity MCQS Online Test

ECAT Current Electricity Chapter Online Test

Total Questions: 97
Time Allowed: 35 Minutes
Total Marks: 97
How to Attempt Test: Please choose the right Option in MCQ-type question.
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1. What type of temperature coefficient of resistance is thermistors?

2. The thermistors are usually made of

3. A conductor which obeys Ohm’s law is called

4. Current provided by a battery is maximum when

5. Ohm’s law describes the mathematical relationship between

6. Heat energy dissipated in resistors is defined as:

7. The unit of conductance of a material is

8. Three resistors of resistance 2, 3 and 6 ohms are connected in parallel, their equivalent resistance is

9. The resistance of the given conductor can be increased by

10. As the charge flows through the conductor energy is dissipated in the form of:

11. A 100 watt bulb is operated by 200 volt, the current flowing through the bulb is:

12. Thermocouple is an arrangement of two different metals

13. The resistance of a conductor increases with the increase in its:

14. A conducting wire is drawn to double its length. Final resistivity of the material will be:

15. Electrical power dissipation in resistors is given by

16. Which one of the following causes production of heat when current is set up in a wire?

17. A piece of fuse wire melts when a current of 15 ampere flows through it. With this current, if it dissipates 22.5 W, the resistance of fuse wire will be

18. The electric motors uses the effect of current passing through them is

19. Two resistances of 2Ω and 3Ω connected in parallel are attached to a source of 20 V. The current through 3Ω resistance is

20. The value of resistance depends upon

21. A battery of emf 12V and internal resistance 0.5 is charged by a battery charger which supplied a 132 V d.c. supply using a series resistance of 11.5. What is the terminal voltage of the battery during changing?

22. The conductivity of a superconductor is

23. At ordinary temperature, an increase in temperature increases the conductivity of

24. The potential difference between head and tail of an electric eel (fish) up to

25. In the circuit each of the three resistances has a resistance 30Ω. The potential difference across R₁ is

 


 

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