Important objective questions

Important objective questions for higher secondary level and Diploma level students :

1. What is the cgs unit of electric

charge?

1. coulomb

2. stat coulomb

3. mili coulomb

4. ampere

      2. Find the correct dimensional  

          Formula of Electric charge?

1. [ M1 L1 T-1 ]

2. [ Mo Lo To C1 ]

3. [L1 T-1 A-1 ]

4. [ A1 T1 ]

      3. Minimum charge that can  

          exist is

1. 1 C

2. 6.25 × 1018 C

3. 1.6 × 10-19  C

4. 0.001 C

      4. How many electons are there 

          in 1 C ?

1. 1 electron

2. 1.16 × 10-19 electrons

3. 6.28 × 1018 electrons

4. Can't be found

      5. What is the unit of Electric  

          field ?

1. V / m

2. Nm2 / C

3. volt (V)

4. Nm2 / C2

       6. Find the correct dimensional 

           Formula for Electric field.

1. [ M1 L1 T-1 A-1 ]

2. [ M1 L1 T-1 ]

3. [ M1 L1 T-3 A-1]

4. [ Mo L1 T-1 A-1]

      7. Find the charge on a body 

           having 2 × 107 electrons.

1. 3.2 × 10-16 C

2. 1.6 × 10-16 C

3. 3.2 × 10-12 C

4. 1.6 × 1012  C

      8. Two unit charges are placed 

           at unit distance, what would   

           be the force of interaction 

           between them ?

1. 1 N

2. 2.56 × 10-38 N

3. 9 × 109 N

4. Can't be found

      9.Write the dimensional 

          Formula for absolute 

          electrical Permittivity of    

          medium.

1. [ M1 L1 T-3 A-1 ]

2. [ M1 L3 T-1 A-3 ]

3. [ M-1 L-2 T-4 A-3 ]

4. [ M-1 L-3 T4 A2 ]

      10. What is the value of 

             absolute electrical 

             permittivity of free space ?

1. 9 × 109 Nm2 / C2

2. 8.85 × 10-12 Nm2 / C2

3. 9 × 109  C2 N-1m-2

4. 8.85 × 10-12 C2 N-1m-2

      11. if a body gives out 109 

            electrons per second, how 

            much time is required to get 

            a total charge of 1 C from 

            it?

1. 6.25 × 1013 s

2. 198 year

3. 6.25 × 1011 s

4. 158 year

      12. What is the dimensional 

             formula of electric flux?

1. [ M1 L3 T-3 A-1 ]

2. [ M1 L3 T-1 A-3 ]

3. [ M1 L2 T-1 A-1 ]

4. [ M2 L3 T-2 A-3 ]

Write your answer in comments

GET YOUR RELATED TOPICS HERE : CLICK HERE