Force on a Moving Charge and Current Carrying Conductor Definition: Force is a push or a pull exerted on a charged object or a conductor in motion. The...
Force on a Moving Charge and Current Carrying Conductor
Definition:
Force is a push or a pull exerted on a charged object or a conductor in motion. The direction of the force depends on the direction of the electric field created by the conductor.
Electromagnetic Force:
The force on a moving charge is given by the formula:
F = qE
where:
F is the force in newton (N)
q is the charge in coulombs (C)
E is the electric field strength in newton/coulomb (N/C)
Current Carrying Conductor:
When a conductor carries a current, the electric field created by the conductor also exerts a force on the charges moving through it. This is known as the magnetic force.
Direction of the Magnetic Force:
The direction of the magnetic force is given by the right-hand rule. If you curl your fingers in the direction of the current, your thumb will point in the direction of the magnetic force.
Relationship between Force and Current:
The magnitude of the magnetic force on a conductor carrying a current is given by the formula:
F = lI
where:
l is the length of the conductor in meters (m)
I is the current in amperes (A)
Examples:
When a positive charge moves through a magnetic field, it experiences a force pushing it upwards.
When a current-carrying conductor is placed in a magnetic field, it experiences a force that tends to make the conductor move in the direction of the magnetic field.
The magnetic force on a current-carrying conductor can be used to create magnetic fields, which are used in various technologies, such as speakers and MRI machines