Problems VI
- A collapsing field around a coil?
- The coefficient of coupling between two air core coils depends on?
- whenever a conductor cuts magnetic flux, an emf is induced in. This statement is known as the _____?
- Magnetic lines of force are called _____?
- The permeability of a material means _____?
- A solenoid 25 cm ling is wound with 200 turns, what is the value of the field strength inside the solenoid, when carrying a current of 2 amperes?
- A solenoid 20 cm long and is wound with 500 turns of wire. What current will be required to set up a field strength of 3000 AT/m inside the solenoid?
- The force between two magnetc poles varies with distance between the variation is _____?
- According to Lenz's law, the direction of induced emf and hence current _____?
- Discovered the relationship between magnetism and electricity that serves as the foundation for the theory of electromagnetism?
- Who demonstrated in 1784, the force between charges is inversely related to the square of the distance between them?
- Demonstrated in 1831, the theory of electromagnetic induction?
- Discovered one of the most important electrical effects which is the magnetic effect?
- Developed the electromagnetic theory of light in 1862?
- Demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying conductors can attact and repel each other just like magnets?
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