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1.
A conducting loop carrying a current 
is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to
is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to2.
and 
are two conductors carrying a current 
in the same direction. 
and 
are two electron beams moving in the same direction
and are two conductors carrying a current in the same direction. and are two electron beams moving in the same direction
3.
An electron 
is moving at right angle to the uniform magnetic field
3.534 × 10â»âµ T. The time taken by the electron to complete a circular orbit is
is moving at right angle to the uniform magnetic field3.534 × 10â»âµ T. The time taken by the electron to complete a circular orbit is
4.
A particle having a mass of 
carries a charge of 
. The particle is given an initial horizontal velocity of 
in the presence of electric field 
and magnetic field 
. To keep the particle moving in a horizontal direction, it is necessary that
(1) should be perpendicular to the direction of velocity and should be along the direction of velocity
(2) Both and should be along the direction of velocity
(3) Both and are mutually perpendicular and perpendicular to the direction of velocity
(4)
should be along the direction of velocity and should be perpendicular to the direction of velocity
Which of the following pairs of statements is possible
carries a charge of . The particle is given an initial horizontal velocity of in the presence of electric field and magnetic field . To keep the particle moving in a horizontal direction, it is necessary that(1)
should be perpendicular to the direction of velocity and should be along the direction of velocity(2) Both
and should be along the direction of velocity(3) Both
and are mutually perpendicular and perpendicular to the direction of velocity(4)
should be along the direction of velocity and should be perpendicular to the direction of velocityWhich of the following pairs of statements is possible
5.
Which of the following gives the value of magnetic field according to Biot-Savart' law
6.
Two ions having masses in the ratio 1 : 1 and charges 1 : 2 are projected into uniform magnetic field perpendicular to the field with speeds in the ratio 2 : 3. The ratio of the ratio of circular paths along which the two particles move is
7.
Equal current flows in two segments of a circular loop in the direction shown in figure. Radius of the loop is 
. The magnitude of magnitude field induction at the centre of the loop is
flows in two segments of a circular loop in the direction shown in figure. Radius of the loop is . The magnitude of magnitude field induction at the centre of the loop is
8.
An electron beam travels with a velocity of 
perpendicularly to magnetic field of intensity 0.1 T. The radius of the path of the electron beam 
perpendicularly to magnetic field of intensity 0.1 T. The radius of the path of the electron beam
9.
A wire carrying current is shaped as shown. Section 
is a quarter circle of radius . The magnetic field is directed
is shaped as shown. Section is a quarter circle of radius . The magnetic field is directed
10.
If same current passing through two parallel wires separated by a distance 
then force per unit length will be
passing through two parallel wires separated by a distance then force per unit length will be