experiments >> various hook-up experiments with available stativ material
The Force acting upon a current carrying conductor
The various topics for perusal are as follows:
› Uniform magnetic fields
› Magnetic induction (formerly magnetic-flux density)
› Lorentz force
› Moving charges
› Current
The force acting on a current-carrying conductor loop in a uniform magnetic field (Lorentz force) is measured with a balance. Conductor loops of various sizes are suspended in turn from the balance, and the Lorentz force is determined as a function of the current and magnetic induction. The uniform magnetic field is generated by an electromagnet. The magnetic induction can be varied with the coil current.The current balance enables the force exerted by a homogenous magnetic field on a conductor through current flows to be determined as a function of the current intensity through the conductor, the length of the conductor and the magnetic flux.
If a magnetic-field measuring instrument is available, then the Lorentz force can be measured directly as a function of the magnetic induction.
Experiments which may be carried out with this equipment set are mentioned below:
› The direction of the force is to be determined as a function of the current and the direction of the magnetic field.
› The force F is to be measured, as a function of the current IL in the conductor loop, with a constant magnetic induction B and for conductor loops of various sizes. The magnetic induction is to be calculated.
› The force F is to be measured, as a function of the coil current IM, for a conductor loop. In the range being considered, the magnetic induction B is, with sufficient accuray, proportional to the coil current IM.
Related information of important terms:
Lorentz force: A magnetic field B imparts a force on moving charged particles. The entire electromagnetic force on a charged particle with charge q and velocity v is called the Lorentz force (after the Dutch physicist Hendrik A. Lorentz).
Felming's Left hand Rule: The three directions illustrated by the Fleming's Left Hand Rule where if the fore-finger shows the direction of the field, and the middle finger that of the current, then the thumb will point towards the motion of the conductor.
Incase any query needs to be answered, please drop us an email.
experiments >> various hook-up experiments with available stativ material