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Current Electricity, Thermal & Chemical Effect of Current Test Online MCQs

Test Name Current Electricity, Thermal & Chemical Effect of Current MCQs Test
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Multiple Choice Questions about the topic of Current Electricity, Thermal & Chemical Effect of Current. Attempt all the questions for the preparation of physic subject test, admission test, engineering test and medical test. Current Electricity, Thermal & Chemical Effect of Current Test Online MCQs below.

Current Electricity, Thermal & Chemical Effect of Current Test Online MCQs

Physics

1. When the key K is passed at t = 0, which of the following statements about the current 1 in the resistor AB of the given circuit is ture?

 

27

Question 1 of 15

2. Given a current carrying wire of non-uniform cross-section. Which one of the following is constant throughout the length of wire?

 

Question 2 of 15

3. The resistance of a galvanometer is 50 Ω and current required to give full scale deflection is 100 μA in order to convert it into an ammeter for reading up to 10A. It is necessary to put an resistance of

 

Question 3 of 15

4. When the power delivered by a 100 volt battery is 40 watts the equivalent resistance of the circuit is:

 

Question 4 of 15

5. Same length of two identical wires are first connected is series and then in parallel, then the amount of heat produced in both the conditions are in the ratio:

 

Question 5 of 15

6. Four wires of the same diameter are connected in turn between two points, maintained at a constant potential difference. Their resistivities are; p and L (wire 1)., 1.2p and 1.2L (wire 2), 0.9 p and 0.9L (wire 3) and p and 1.5 L (wire 4). Rank the wires according to the rates at which energy is dissipated as heat, greatest first

 

Question 6 of 15

7. In the figure shown, the capacity of the condenser C is 2μF. The current in 2Ω resistance is

 

25

Question 7 of 15

8. The internal resistance of a cell is the resistance of: 

 

Question 8 of 15

9. In the given figure, the equivalent resistance between two points A and B will be:

 

 

98

Question 9 of 15

10. The electro-chemical equivalent of a substance in numerical equal to the mass of the substance deposited if a current I flows through the electrolyte for 0.25 seconds. The value of I is:

 

Question 10 of 15

11. A moving coil galvanometer is converted into an ammeter reads up to 0.03 A by connecting a shunt of resistance 4r across it and ammeter reads up to 0.06 A, when a shunt of resistance r is used. What is the maximum current which can be sent through this galvanometer is no shunt is used?

 

Question 11 of 15

12. Two sources of equal emf are connected to an external resistance R. The internal resistance of the two sources are R₁ and R₂ (R₂ > R₁). If the potential difference across the source having internal resistance R₂ is zero, then

 

Question 12 of 15

13. A wire of radius r has resistance R. If it is stretched to a radius r/2, its resistance will be:

 

Question 13 of 15

14. The value of current i in the circuit as shown in figure is:

012

Question 14 of 15

15. The current in the given circuit is:

 

21

Question 15 of 15


 

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