On moving away from the wire, the gap between the field lines ________.
Choose the correct option concerning magnetic forces and fields?
I. The magnetic field lines due to a current-carrying wire radiate away from the wire.
II. A charged particle can move through a magnetic field without feeling a magnetic force.
III. The kinetic energy of a charged particle can be increased by a magnetic force.
The wire in Figure below is being moved downwards throught are magnetic fields so as to produce induced current.
What would be the effect of :
(a) moving the wire at a higher speed ?
(b) moving the wire upwards rather than downwards ?
(c) using a stronger magnet ?
(d) holding the wire still in the magnetic field ?
(e) moving the wire parallel to the magnetic field lines ?