An
experiment to illustrate the Force on a Wire in a Magnetic Field
:
When a curent flows in the wire,
a force is exerted on the magnet on the top pan balance and a reading
on the balance can be recorded. If the current is reversed, the balance
shows a negative value, showing that the force on the magnets reverses.
The force also reverses if the field direction is reversed.
If a bigger current is passed through the
wire the force is bigger and a larger reading is observed on the balance.
The size of the force depends
on:
- the size of the current (this
can be increased by increasing the voltage from the power supply)
- the length of conductor in
the field
- the strength of the magnetic
field (this can be increased by using stronger magnets)
the angle between the conductor and the
flux lines: F is a maximum if the angle is 90° and is zero
if the angle is 0°