5.1.2 MAGNETIC FIELDS

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Created by: upsidedown1004
Created on: 26-06-16 12:09

Describe magnetic field lines

always north to south

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Describe magnetic field lines in long straight current carrying conductors

RIGHT HAND GRIP RULE/ thumb is the direction of current/ concentric circles of increasing radii

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What is a solenoid?

many flat coils placed side by side

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What is magnetic flux density?

magnetic field strength/ measure of the strength of a magnetic field at a given point

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What is magnetic flux density measured in? define it

TESLA/ When a wire carrying 1A of current experiences a force of 1N per metre of length

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Describe Flemings left hand rule

force in a current conductor cutting a magnetic field at 90/ motor effect/ ThuMb motion of force/ First Finger - field/ seCond finger - current

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When do you use BIL?

BIL - for a current carrying length of wire/ if cut at an angle use cos

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When do you use BEV?

force on a charged particle moving through a uniform magnetic field/ can use circular motion = mv/r

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Describe the circular orbits of charged particles

mass m carrying charge c with velocity v/ does not affect speed/ needs to be moving

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Outline how mass spectrometers work

vaporised and ionised sample/ electric field accelerates the ions/ magnetic field deflects in circular path/ radius depends on mass to charge ratio, velocity/ only ions moving in a particular radius will make it through slits in detector

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what does a mass spectrometer do?

separates ions of different masses using a magnetic field

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Other cards in this set

Card 2

Front

Describe magnetic field lines in long straight current carrying conductors

Back

RIGHT HAND GRIP RULE/ thumb is the direction of current/ concentric circles of increasing radii

Card 3

Front

What is a solenoid?

Back

Card 4

Front

What is magnetic flux density?

Back

Card 5

Front

What is magnetic flux density measured in? define it

Back

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5.1.2 MAGNETIC FIELDS