magnetic circuits

The unit of magnetic flux is.....

• Tesla

• Ampere

• Henry

• Weber

MMF stands for

• magnetic most force

• Magneto motive force

• Mechanical motive force

• None of the above

The opposition to the flow of flux is called as.....

• Resistance

• Resilience

• Reluctance

• Permeance

Magnetisation curve is plotted between...........

• B&H

• B&V

• V&I

• I&R

In magnetic circuits, H stands for......

• Magnetic flux density

• Permeability

• Magnetic field strength

• Magnetic flux

8.An insulator is a material that _______.

• produces heat and light.

• does not easily allow the flow of electricity

• is expensive.

• connects batteries to wires in a circuit

Material that allows electric current or heat to flow through easily.

• electromagnetic field

• conductor

• open circuit

• electric current

The space around a magnet where magnetism acts is known as the _______________.

• attraction

• strength

• field of gravity

• magnetic field

Lenz's law states that the induced voltage across an inductor ____.

• Always opposes the current through the inductor

• Always opposes any change in current

• Changes polarity as current changes direction

• Always opposes the applied votage

The production of a voltage across an inductor as a result of its own expanding or contracting magnetic field is called ____.

• Flux density

• Self-inductance

• Counter emf

• Faraday's second law