The force of current or force on charge with formula F = BIL and F = Bqv.
Circular motion is F = mv2/r .
Torque is t = F x perpendicular distance
Force on two parallel current carrying wires. Either attract or repel.
Magnetic flux pattern of straight wire, flat circular coil, long solenoid . Ferrous core increases strenth of B .
How to select velocity of charged particles. Velocity selector.
Define magnetic flux density and the tesla.
If the particle is large like oil drop or dust or soot (not atoms) , gravitational field comes into picture.Be prepared for combined effect of g, E and B . Since E has been ask extensively in paper 2 focus may be on g and B.
