CBSE Class 12 Moving Charges and Magnetism Multiple Choice Questions with Answers. MCQ Questions Class 12 Moving Charges and Magnetism with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Moving Charges and Magnetism MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Moving Charges and Magnetism with Answers - Set - 4
Question 1:
Isoclinic lines are the lines joining places with :
(a) equal dip
(b) equal declination
(cj equal dip and declination
(d) None of these
Correct Answer – (A)
Question 2 :
When charged particle enters-a uniform magnetic field, its K.E.:
(a) remains constant
(b) increases
(c) decreases
(d) becomes zero
Correct Answer – (A)
Question 3 :
A wire of length 2 metre carries a current 1 ampere, is bent to form a circle. The magnetic moment of the coil is :
(a) 2π
(b) π/2
(c) π/4
(d) 1/π
Correct Answer – (D)
Question 4 :
A charge + q is sent through a magnetic field. The force acting on it is maximum w hen the angle between the direction of motion of the charged particle and the magnetic field :
(a) 0°
(b) 45°
(c) 90°
(d) 180°
Correct Answer – (C)
Question 5 :
Which of the following is not a unit of magnetic induction?
(a) gauss
(b) tesla
(c) oersted
(d) weber/metre²
Correct Answer – (C)
MCQ Questions Class 12 Moving Charges and Magnetism with Answers
Question 6 :
To convert galvanometer into voltmeter one should connect :
(a) high resistance in series with galvanometer
(b) low resistance in series with galvanometer
(c) high resistance in parallel with galvanometer
(d) low resistance in parallel with galvanometer
Correct Answer – (A)
Question 7 :
The magnetic field of a given length of a ware for single turn coil at its centre is B. Then.its value for two turns of coil will be :
(a) B/4
(b) B/2
(c) 4B
(d) 2B
Correct Answer – (C)
Question 8 :
(a) eE/qmB
(b) 2πm/eB
(c) eB / 2πm
(d) 2m / eBE
Correct Answer – (C)
Question 9 :
The magnetic field produced by an / meter long straight (x cry thin) current (I) carry ing conductor at any point on itself is :
(a) zero
(b) infinite
(c) µ0l/4πl
(d) µ0l/2πl
Correct Answer – (A)
Question 10 :
The force between two parallel current carrying conductors is F. If the current in each conductor is doubled, then the force between them becomes :
(a) 4F
(b) 2F
(c) F
(d) F/4
Correct Answer – (A)
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