CBSE Class 12 Electric Charges and Fields Multiple Choice Questions with Answers. MCQ Questions Class 12 Electric Charges and Fields with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Electric Charges and Fields MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Electric Charges and Fields with Answers - Set - 2
Question 1:
The dielectric constant of a metal is:
(a) 0
(b) 1
(c) ∞
(d) -1
Correct Answer – (C)
Question 2 :
If sphere of bad conductor is given charge then it is distributed on:
(a) surface
(b) inside the surface
(c) only inside the surface
(d) None
Correct Answer – (D)
Question 3 :
The number of electron-taken out from a body to produce 1 coulomb of charge will be :
(a) 6.25 × 1018
(b) 625 × 1018
(c) 6.023 × 1023
(d) None
Correct Answer – (A)
Question 4 :
Three charges + 3q + q and Q are placed on a st. line with equal separation. In order to maket the net force on q to be zero, the value of Q will be :
(a) +3q
(b) +2q
(c) -3q
(d) -4q
Correct Answer – (A)
Question 5 :
The position of the charge inside the enclosing surface is changed in such a way that the total charge remains constant. Then the total normal electric flux through the enclosing surface:
(a) increases
(b) decreases
(c) changes erratically
(d) Remains unchanged.
Correct Answer – (D)
MCQ Questions Class 12 Electric Charges and Fields with Answers
Question 6 :
Electric field in a cavity of metal:
(a) depends upon the surroundings
(b) depends upon the size of cavity
(c) is always zero
(d) is not necessarily zero
Correct Answer – (D)
Question 7 :
The work done in rotating an electric dipole in an electric field:
(a) W = ME (1 – cos θ)
(b) W = ME tan θ
(c)W = ME sec θ
(d) None
Correct Answer – (A)
Question 8 :
If an electric dipole is kept in a uniform electric field then resultant electric force on it is :
(a) always zero
(b) never zero
(c) depend upon capacity of dipole
(d) None
Correct Answer – (A)
Question 9 :
Which one of the following is the unit of electric field?
(a) Coulomb
(b) Newton
(c) Volt
(d) N/C
Correct Answer – (D)
Question 10 :
An electron and a proton are placed in the same uniform electric field. What will be the ratio of the acceleration of electron to that of proton?
(a) 1
(b) zero
(c) mp/me
(d) me/mp
mpmeMP(d) memp
Correct Answer – (C)
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