1) The length of VW, WX, XY and YZ are 10.0 cm each. Find the net force on the segment of wire, VWXYZ, in the figure below if the strength of the magnetic field B is 0.40 T and the current I flowing through the wire is 5.0 A.

2) A charge Q is travelling with speed v in a magnetic field B. At one instant in time, its velocity is at an angle θ to the horizontal as shown.

What is the magnetic force acting on it at this instant in time?

3) When a charged particle is in a region of magnetic field, which of the following is not a necessary condition for the particle to experience a magnetic force?

4) A particle of mass m and charge +q enters with speed v at right angles to a magnetic field B. The particle arrives at point P, a distance d from the slit as shown in the diagram below.

Which of the following is a correct expression for d?

5) An electron enters a region at point O at an angle of 45° to the x-axis as shown. The region contains a magnetic field which is directed into the plane of the page.

An electric field can be applied such that the electron is able to pass through the region undeflected.

Which of the following correctly shows the direction of the electric field from O?