# Electric Charges and Fields Class 12 Physics Chapter 1 MCQ Question Answer NCERT Solution

Class 12 Physics Chapter 1 objective type / mcq question answer of Electric Charges and Fields NCERT Solution in Hindi. NCERT Class 12 Physics MCQ Question Answer and Important Question Answer, Textual Question answer also Available for Various Board Students like HBSE, CBSE, UP board, Mp Board, RBSE and some other State Boards.

Also Read:- Class 12 Physics NCERT Solution

NCERT Solution for Class 12 Physics Chapter 1 Electric Charges and Fields MCQ Question Answer.

## Electric Charges and Fields Class 12 MCQ Question Answer

1. Two charges +1µC and +4µC are situated at a distance in air. The ratio of forces acting on them is :
(A) 1:4
(B) 4:1
(C) 1:1
(D) 1 : 16

Ans. (D) 1 : 16

2. Process of sharing the charges with the earth is called
(A) conduction
(B) insulation
(C) earthing
(D) charging

Ans. (C) earthing.

3. SI unit of k (proportionality constant in coulomb’s law) is :
(A) N1 C-2/m2
(B) Nm2/C2
(C) N-1C2m2
(D) N-1C2m1

Ans. (A) N1 C-2/m2.

4. Quantization of charge was experimentally demonstrated by …..in 1912.
(A) Millikan
(B) Albert Einstein
(C) lavioser
(D) Niels bohr

Ans. (A) Millikan

5. There are about …….. electrons in a charge of -1 coulomb.
(A) 0
(B) 1
(C) 1.6 x 1019
(D) 6.24×1018

Ans. (D) 6.24×1018

6.Nature of electric force between two protons is:
(A) Attractive
(B) Neutral
(C) Repulsive
(D) None of the above.

Ans. (C) Repulsive

7. The force of repulsion between two positively charged particles is F. When distance between them is made one fourth, what will be the value of this force ?
(A) four times
(B) two times
(C) half
(D) sixteen times

Ans. (D) sixteen times

8. The force of repulsion between two negatively charged particles is F. When distance between them is halved, what will be the value of this force ?
(A) four times
(B) two times
(C) half
(D) sixteen times

Ans. (A) four times

9. The charge on an atom is:
(A) 0 C
(B) 1 C
(C) 1.6 x 10-19 C
(D) — 1.6×10-19 C

Ans. (D) — 1.6×10-19 C

10. The charge on a neutron is :
(A) 0 C
(B) 1.6x 10-19 C
(C)-1.6×10 C
(D) 1 C

Ans. (A) 0 C

11. The charge on an Proton is :
(A) O C
(B) 1 C
(C) 2.6 x 1019 C
(D) + 1.6 x 10-19 C

Ans. (D) + 1.6 x 10-19 C

12. SI unit of electric charge is :
(A) Ampere
(B) Coulomb
(C) Volt
(D) None.