Basic Electrical

A freely suspended magnet always comes to rest in

• North south direction
• North east direction
• Both a and b
• None

The group of force lines going from north pole to the south pole of a magnet is called

• Magnetic Flux
• Magneto motive force
• Both a and b
• None

The force that produce magnetic field is

• Flux
• Magnetic flux
• MMF
• None

The unit of mmf is

• Weber
• Ampere-turn
• Henry
• None

Opposition to the flow of magnetic fied is

• Reluctance
• Flux
• Electric field
• Resistance

The unit of reluctance is

• Flux
• Weber
• Ampere
• Ampere-turn/ weber

The magnetic field has

• Positive and negative
• Phase and neutral
• North and south pole
• None

The force rule states the light charges repel unlike charges

• Oppose
• Attract
• Both a and b
• None

The reluctance is denoted by the letter

• V
• R
• I
• S

The unit of permeability

• Henry/meter
• Farad/meter
• Ampere
• Volt