(A) 0.01 Ω
(B) 0.1 Ω
(C) -10 Ω
(D) 1 Ω
Tag: Physics Mcqs
Which of the following quantities is not affected by magnetic field?
(A) moving charge
(B) change in magnetic flux
(C) current flowing in a conductor
(D) stationary charge
The magnetic field inside a solenoid is:
(A) zero
(B) non-uniform
(C) infinite
(D) uniform
The phenomenon of production of magnetic field on passing an electric current in a straight conducting wire is based on the law of:
(A) coulomb
(B) oersted
(C) ampere
(D) faraday
In a current carrying long solenoid the field produced does not depend on:
(A) number of turns per unit length
(B) current flowing
(C) radius of the solenoid
(D) all of these
A current passing rough a circular coil of two urns produces a magnetic field B at its center. The coil is then rewound so as to have four turns and the same current is passed through it. The magnetic field at its center now is:
(A) B/4
(B) 4B
(C) 2B
(D) B/2
A charged particle is moving with velocity v in a magnetic field of induction B. The force on the particle will be maximum when:
(A) v and B are in the same direction
(B) v and B are in the opposite directions
(C) v and B are parallel
(D) v and B are at an angle of 45 degree
A straight wire of length 0.5 m and carrying a current of 1.2 A is placed in a uniform magnetic field of induction 2T. The magnetic field is perpendicular to the length of wire. The force on the wire is:
(A) 2.4 N
(B) 1.2 N
(C) 3.0 N
(D) 2.0 N