__Important objective questions for higher secondary level and Diploma level students :__

1. What is the cgs unit of electric

charge?

coulomb

stat coulomb

mili coulomb

ampere

2. Find the correct dimensional

Formula of Electric charge?

[ M1 L1 T-1 ]

[ Mo Lo To C1 ]

[L1 T-1 A-1 ]

[ A1 T1 ]

3. Minimum charge that can

exist is

1 C

6.25 × 1018 C

1.6 × 10-19 C

0.001 C

4. How many electons are there

in 1 C ?

1 electron

1.16 × 10-19 electrons

6.28 × 1018 electrons

Can't be found

5. What is the unit of Electric

field ?

V / m

Nm2 / C

volt (V)

Nm2 / C2

6. Find the correct dimensional

Formula for Electric field.

[ M1 L1 T-1 A-1 ]

[ M1 L1 T-1 ]

[ M1 L1 T-3 A-1]

[ Mo L1 T-1 A-1]

7. Find the charge on a body

having 2 × 107 electrons.

3.2 × 10-16 C

1.6 × 10-16 C

3.2 × 10-12 C

1.6 × 1012 C

8. Two unit charges are placed

at unit distance, what would

be the force of interaction

between them ?

1 N

2.56 × 10-38 N

9 × 109 N

Can't be found

9.Write the dimensional

Formula for absolute

electrical Permittivity of

medium.

[ M1 L1 T-3 A-1 ]

[ M1 L3 T-1 A-3 ]

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

[ M-1 L-3 T4 A2 ]

10. What is the value of

absolute electrical

permittivity of free space ?

9 × 109 Nm2 / C2

8.85 × 10-12 Nm2 / C2

9 × 109 C2 N-1m-2

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?

6.25 × 1013 s

198 year

6.25 × 1011 s

158 year

12. What is the dimensional

formula of electric flux?

[ M1 L3 T-3 A-1 ]

[ M1 L3 T-1 A-3 ]

[ M1 L2 T-1 A-1 ]

[ M2 L3 T-2 A-3 ]

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## 16 Comments

Ans1.-coulomb

ReplyDeleteStat coulomb

DeleteAns3.-1.6×10^-19 C

ReplyDeleteAns5.- V/m or N/C

ReplyDeleteAnd.- [M^1L^1T^-3A^-1]

ReplyDeleteQ.6.Ans-

DeleteAns.7- 3.2×10^-12 C

ReplyDeleteAns.2-[M^0L^0T^1A^1]

ReplyDelete9

ReplyDeleteAns - D

10.

ReplyDeleteAns- D

11.Ans-198 year

ReplyDeleteGood👍

DeleteThanks Sir

DeleteThanks Sir

Delete12

ReplyDeleteAns- A

4.ans - 6.25×10^18 electron

ReplyDeleteIf you have any doubt, please let me know. Leave a comment here...