A 40W electric heater consists of a straight nichrome wire of length 0.50m. The heater is connected to a 20V DC supply and is kept in a region having a uniform magnetic field. The wire makes an angle of 60∘ with the direction of the field.
(i) Calculate the current flowing through the wire.
(ii) If the magnetic force required on the wire is 0.30N, determine the minimum magnetic field strength needed in the region.