force fields in physics

Magnetic Fields and Field Lines - If a small compass needle is placed at a point near the north pole of a bar magnet, the needle turns round on its pivot and settles in a fixed direction as shown in figure. At other points away from the pole the needle settles tangent to the ..

Lorentz Force - The force experienced by a charged particle moving in space where both electric and magnetic field exist is called lorentz force. The lorentz force is therefore the vector sum of force due to electric field and th..

Electric Field - The electric field or electric field strength is the electrostatic force acting on a small positive test charge placed at that point. If is the electrostatic force experienced by a test charge q at a point, then the electric fi..

The space around a body within which its gravitational force of attraction is experienced, is called its gravitational field..

The space around a body within which its gravitational force of attraction is experienced, is called its gravitational field..

A magnetic field is defined as a region in which a magnetic force is present. In a magnetic field, the magnetic dipole (two equal and oppositely charged or magnetized poles separated by a distance) experiences a turning force, which tends to align it parallel..

It can be either attractive or repulsive. It can be the force between two magnets or force on a magnet placed in a magnetic field..

The force experienced by a charged particle moving in space where both electric and magnetic field exist is called lorentz force..

Dipole in an external field Consider a permanent dipole of dipole moment 'p' in a uniform external field E, which implies that p does not depend E nor it is induced due to E. The force on q is qE and on -q is -qE and net force on dipole is zero. H..