Current Electricity - Practice Questions- Question bank

 

CURRENT ELECTRICITY QUESTION BANK

 

 Q.1. Define the following terms

1.   Potentiometer

2.   Potential gradient

 Q.2. State and explain

1.   Kirchhoff’s current law/junction law

2.   Kirchhoff’s voltage law

3.   Potentiometer principle

           

Q.3. What are the uses of a potentiometer?

       

Q.4. Distinguish between a potentiometer and a voltmeter.

     

Q.5. What are the disadvantages of a potentiometer?

    

Q.6. What are the advantages of a potentiometer over voltmeter?

     

Q.7. Describe how a potentiometer is used to compare the emf of two cells by connecting the cells individually.

        

Q.8. Describe how a potentiometer is used to compare the emf of two cells by combination method.

      

Q.9. What is sum method? Draw the symbolic diagram.

      

Q.10. What is difference method? Draw the symbolic diagram.

        

Q.11. Describe with the help of a neat circuit diagram how you will determine the internal resistance of a cell by using a potentiometer. Derive the necessary formula.

        

Q.12. Obtain the balancing condition in case of a Wheatstone’s  network.

     

Q.13. Explain with neat circuit diagram, how you will determine the unknown resistance by using a meter-bridge.

        

Q.14. What is potential gradient? How is it measured? Explain.

OR

Q.15. State and explain principle of potentiometer.

             

Q.16. What are the applications of potentiometer?