MOVING CHARGES AND MAGNETISM Set 3

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

 

and are two conductors carrying a current in the same direction. and are two electron beams moving in the same direction

An electron is moving at right angle to the uniform magnetic field
3.534 × 10⁻⁵ T. The time taken by the electron to complete a circular orbit is

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

Which of the following gives the value of magnetic field according to Biot-Savart' law