PROBLEM SOLVING 1. An electron is traveling to the north with a speed of 3.5 x 106 m/s when a magnetic field is turned on. The strength of the magnetic field is 0.030 T, and it is directed to the left. What will be the direction and magnitude of the magnetic force?

2. The Earth's magnetic field is approximately 5.9 × 10-5 T. If an electron is travelling perpendicular to the field at 2.0 × 105 m/s, what is the magnetic force on the electron?

3. A charged particle of q=4μC moves through a uniform magnetic field of B=100 F with velocity 2 x 103 m/s. The angle between 30o. Find the magnitude of the force acting on the charge.

4. A circular loop of area 5 x 10-2m2 rotates in a uniform magnetic field of 0.2 T. If the loop rotates about its diameter which is perpendicular to the magnetic field, what will be the magnetic flux?