Force on a current carrying conductor placed in a magnetic field
Let us consider a conductor PQ of length l and area of cross section A. The conductor is placed in a uniform magnetic field...
Moving coil Galvanometer
Moving coil galvanometer is a device used for measuring the current in a circuit.
Fig. The moving coil galvanometer. Its elements are described in the...
Cyclotron
A cyclotron is a device used to accelerate charged particles to high energies. It was devised by Lawrence.
Principle: Cyclotron works on the principle that...
Torque experienced by a current loop in uniform magnetic field
Let us consider a rectangular loop PQRS of length l and breadth b (Fig). It carries a current of I along PQRS. The loop is placed in a...
Force between two parallel current-carrying conductors – definition of ampere
AB and CD are two straight very long parallel conductors placed in air at a distance a. They carry currents I1 and I2 respectively.(Fig 3.23) The...
Motion of a charged particle in a uniform magnetic field
Let us consider a uniform magnetic field of induction B acting along the Z-axis. A particle of charge q and mass m moves in XY plane. At a...
Magnetic Lorentz force
Let us consider a uniform magnetic field of induction B acting along the Z-axis. A particle of charge + q moves with a velocity v...
Magnetic Field inside a Straight Solenoid
A solenoid means an insulated copper wire wound closely in the form of a helix.
Where n is no. of turns per unit length, a...
Magnetic Field due to a Toroidal Solenoid
A solenoid bent into the form of a closed ring is called a toroidal solenoid.
Note: The magnetic field exists only in the tubular area...
Biot-Savart law
Biot and Savart conducted many experiments to determine the factors on which the magnetic field due to the current in a conductor depends.
The results...