Chapter : 2. Magnetic Effect of Current
Force on a moving charge
Force on a moving charge
A current–carrying conductor (e.g., a wire) experiences a force when placed in a magnetic field. The current represents a collection of charged particles in motion. Therefore, each moving charged particle in a magnetic field will also experience a force, called Lorenz force.
The direction of the force experienced by a positive charge is the same as that on the current and is given by Fleming’s left-hand rule.
The force, experienced by a current carrying conductor in a magnetic field is given by, -
F = B I l
If Q is the charge passed through the conductor in time t, we can write -
I =
The above relationships, when combined give,
F =
= BQv
where v is the velocity of the charged particle perpendicular to the direction of the field
A current–carrying conductor (e.g., a wire) experiences a force when placed in a magnetic field. The current represents a collection of charged particles in motion. Therefore, each moving charged particle in a magnetic field will also experience a force, called Lorenz force.
The direction of the force experienced by a positive charge is the same as that on the current and is given by Fleming’s left-hand rule.
The force, experienced by a current carrying conductor in a magnetic field is given by, -
F = B I l
If Q is the charge passed through the conductor in time t, we can write -
I =
The above relationships, when combined give,
F =
= BQv where v is the velocity of the charged particle perpendicular to the direction of the field
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