study material-physics-magnetism

# Electromagnetics - 7

__ Hard__:

H1. Uniform electric and magnetic fields with strength E and B are directed along the y-axis. A particle with specific charge a/m leaves the origin in the direction of x-axis with an initial velocity v

_{0}. Find the y-coordinate of the particle when it comes to cross the y-axis for n

^{th}time.

Solution: t = nT =

y = ayt

^{2}a

_{y}=

y =

H2. A particle of change q and mass m is projected from the origin with velocity in a uniform magnetic field . Find the maximum positive x coordinate of the particle during the motion.

Solution:

a

_{y}=

x

_{max}=

__:__

**Key Terms**1. Biot and Savant Law.

2. Magnetic Field.

3. Magnetic Moment.

4. Ampere’s Law.

5. Magnitic Torque.