Magnetic Fields Flashcards by Miriam Chedgzoy

Q

What direction do flux lines go?

A

North to south

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Q

How is strength of a mag field represented?

A

How close together field lines are at a point

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Q

What can be said about a magnets field?

A

Uniform

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Q

When current flows in a wire…..

A

a magnetic field is induces

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Q

A conductor carrying current in a magnetic field will…..

A

….experience a force

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Q

How do two mag fields interact ?

A

Add together to give resultant flux lines

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Q

What to flux lines tend to do?

A

Shorten and straighten

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Q

What direction is the force?

A

Perfpendicular to both current and mag field?

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Q

What is force on a wire proportional to

A

Flux density,current, length

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Q

Unit of mag flux density

A

Tesla

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Q

Digital balance practical graph shows

A

Force against current to find field

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