Physics 2 Exam 24/08/2021
Part 1
Part 2:
1. A positive charge of 10-19 C moves with velocity vector 𝑣⃗ of 10m/s in a uniform magnetic
field of 10-3T which goes out of the page.
a. Determine direction and magnitude of the force exerted by the field to the
charge.
b. Describe and determine the path of the charge.
2. Hollow cylindrical tubes with an infinite length and shells of negligible thickness carry
currents with the same magnitude of I and directions shown below. Determine the
direction and magnitude of the magnitude field created at a point r away from O given
that the mermeability of free space µ0.
3. A coil consists of 100 turns of wire. Each turn is a square of side d = 10 cm, and uniform
magnetic field B directed perpendicular to the plane of the coil is turned on. Draw the
magnitude of the induced emf in the coil as a function of time in seconds given that that
of B is given by