Magnetic forces are those that act on magnetic objects or charged particles moving through a magnetic field. The practical uses of...
structure. All objects in the universe are made of atoms, and each atom has a nucleus at its center. Tiny particles called electrons orbit the nucleus, creating magnetic fields around them. Magnetism occurs when the electrons spin in the same direction. As all the magnetic forces from the ele...
Dzig-zag linesSubmit Magnetic lines of force are Adirected from the north pole to south pole in the magnetic field Bdirected from the south pole to north pole inside a magnet. Cclosed loops DAll the aboveSubmit Give four properties of electric lines of force. Or. Give important propert...
An electromagnet is generally made from coils of wires that act as a magnet when an electric current passes through them. Solenoids are devices of a thin coil of wire wrapped around a magnetic object that, when a current is sent through them, they will give off a magnetic field. In the ...
What are magnetic field lines?Magnetic Field Line:Force is defined as any push or pull. Earlier, physicists knew only of contact forces which can act only when contact is made but later Issac Newton could describe non-contact forces such as gravitational force. Non-contact forces act at a ...
2. Which of the following are action at a distance forces? a) air resistance b) normal forces c) magnetic forces d) frictional forces 3. What is the force that opposes the relative motion or tendency to such motion of two bodies in contact a) magnetism b) the normal force c) gravity...
How does the magnet attract something that is originally non magnetic? Define the magnetic moment. What is its unit? What is the relationship between the electrical and magnetic forces in light? What cause the magnetism? Two parallel dipoles of dipole moments p_1 and p_2 are placed at a x...
The weak and strong forces are effective only over a very short range and dominate only at the level of subatomic particles. (ii) Weak Nuclear Force - Next weakest, but short range. Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Cla...
Magnetic fields are generated by the motion of electric charges, according to HyperPhysics. Electrons all have a fundamental quantum mechanical property of angular momentum, known as "spin." Inside atoms, most electrons tend to form pairs in which one of them is "spin up" and the other is ...
All magnets produce a magnetic field that forces electrically charged particles to move in a helical field around the magnet — and temporary magnets are no exception. They produce an invisible field that attracts and repels other magnets. Temporary magnets, however, aren’t the same as permanent...