1. What is a magnetic field?
2. Distinguish between electric charge and electric current. what are their Si units?
3. when is the body said to be electrically charged? what causes lightning?
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- Magnetic fields force moving electrically charged particles in a circular or helical path. This force—exerted on electric currents in wires in a magnetic field—underlies the operation of electric motors. (For more information about magnetic fields, see magnetism.
- The charge is the property of matter because of which the matter experiences the force of attraction or repulsion in an electric field. Whereas the current is the rate of flow of charged particles called electrons. ... The coulomb is the unit of electric charges, whereas the current is measured in the amperes.
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