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Magnetic Poles and Fields Quiz

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Questions and Answers

What is the relationship between like magnetic poles?

They oscillate

They repel each other (correct)

They attract each other

They have no effect on each other

What is the effect of an electric current flowing through a wire on the magnetic field?

It has no effect on the magnetic field

It creates an electric field

It produces a magnetic field (correct)

It weakens the magnetic field

What materials are considered ferromagnetic materials?

Aluminum, copper, and silver

Gold, platinum, and titanium

Lead, zinc, and tin

Iron, nickel, and cobalt (correct)

What are magnetic domains?

Groups of aligned magnetic atoms responsible for a material's magnetism Signup and view all the answers

How are electric and magnetic fields related to each other?

They are perpendicular to each other Signup and view all the answers

What is the principle behind the operation of a solenoid with an iron core?

Alignment of magnetic domains Signup and view all the answers

What type of device is a motor?

Device that converts electrical energy into mechanical energy Signup and view all the answers

In which device does a coil cut through magnetic fields and cause a current, as per Faraday's law?

Generator Signup and view all the answers

What is the fundamental principle behind the operation of generators?

Faraday’s law of electromagnetic induction Signup and view all the answers

What distinguishes a step-up transformer from other transformers?

The windings of the secondary coil are more than the primary coil Signup and view all the answers