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Electrical devices and appliances are not connected in series because
A) More power losses occur in series B) Series circuit is complex to design
©) Devices have different current rating 0) All of these

The force of attraction or repulsion between two magnetic poles is inversely proportional
to the square of the distance between them. This is known as

A) Newton's first law

B) Faraday’s first law of electromagnetic induction

C) Coulomb's first law

0) Coulomb's second law

Who discovered the relationship between magnetism and electricity that serves as th
foundation for the theory of electromagnetism ?

A) Luigi Galvani B) Hans Christian Oersted

C) Andre Ampere D) Charles Coulomb

A permanent magnet will not attract

A) Copper B) Steel C) Nickel D) Aluminium
The unit of magnetomotive force is

A) Weber/metre B) Ampere turns/metre

C) Ampere turns D) Weber :

Which of the following is a vector quantity 7

A) Flux density B) Magnetic field intensity

C) Magnetic potential D) Relative permeability

The polarity of induced voltage while a field is collapsing is
A) Independent of the force creating the field

B) Opposite to the force creating the field

C) Identical to the force creating the field

D) Present only if the force is stationary

Comparing superparamagnetic and ferromagnetic materials, which statement is false ?
A) Ferromagnetism is usually more powerful than superparamagnetism

B) Ferromagnetism persists when the magnetizing field is removed

C) Superparamagnetism persists once the external field is removed

D) Superparamagnetism can be thought of as a single-domain particle

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