IB Physics Topic D.2.2 Magnetic Field Properties and Laws Revision Notes (SL/HL)

IB Physics Topic D.2.2 Magnetic Field Properties and Laws Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Magnetic Field Lines

Patterns Around Magnets

Magnetic field lines visually represent the direction and strength of a magnetic field.
They always point from the north pole to the south pole outside a magnet, and from south to north inside the magnet, forming closed loops.

Example

Consider a bar magnet.
If you sprinkle iron filings around it, the filings align along the magnetic field lines, revealing a pattern that is densest near the poles (where the field is strongest) and spreads out as you move away.

Patterns Around Wires

A straight current-carrying wire generates a magnetic field with lines forming concentric circles around the wire.
The right-hand rule helps determine the direction:
1. Point your thumb in the direction of the current.
2. Your fingers will curl in the direction of the magnetic field lines.

Example

If the current flows upward, the magnetic field lines will circle the wire in a counterclockwise direction.

Patterns Around a Circular Coil

A single circular loop of current-carrying wire produces field lines that loop around the wire and pass straight through the centre of the coil.
At the centre of the loop the contributions from every part of the wire add together, so the field is concentrated and roughly uniform there.
The right-hand grip rule shows the field leaving one face of the coil and entering the other, so the loop behaves like a small magnet with a north and a south face.

Patterns Around Solenoids

A solenoid is a coil of wire that produces a magnetic field similar to a bar magnet when current flows through it.

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Unlock the rest of this chapter with a free account

Magnetic Field Lines

Patterns Around Magnets

Magnetic field lines visually represent the direction and strength of a magnetic field.
They always point from the north pole to the south pole outside a magnet, and from south to north inside the magnet, forming closed loops.

Example

Consider a bar magnet.
If you sprinkle iron filings around it, the filings align along the magnetic field lines, revealing a pattern that is densest near the poles (where the field is strongest) and spreads out as you move away.

Patterns Around Wires

A straight current-carrying wire generates a magnetic field with lines forming concentric circles around the wire.
The right-hand rule helps determine the direction:
1. Point your thumb in the direction of the current.
2. Your fingers will curl in the direction of the magnetic field lines.

Example

If the current flows upward, the magnetic field lines will circle the wire in a counterclockwise direction.

Patterns Around a Circular Coil

A single circular loop of current-carrying wire produces field lines that loop around the wire and pass straight through the centre of the coil.
At the centre of the loop the contributions from every part of the wire add together, so the field is concentrated and roughly uniform there.
The right-hand grip rule shows the field leaving one face of the coil and entering the other, so the loop behaves like a small magnet with a north and a south face.

Patterns Around Solenoids

A solenoid is a coil of wire that produces a magnetic field similar to a bar magnet when current flows through it.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Topic A - Space, time and motion5 subtopics

Topic B - The particulate nature of matter5 subtopics

Topic C - Wave behaviour5 subtopics

Topic D - Fields4 subtopics

Topic E - Nuclear and quantum physics5 subtopics

IB Physics D.2.2 Magnetic Field Properties and Laws Notes

Magnetic Field Lines

Patterns Around Magnets

Patterns Around Wires

Patterns Around a Circular Coil

Patterns Around Solenoids

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Magnetic Field Lines

Patterns Around Magnets

Patterns Around Wires

Patterns Around a Circular Coil

Patterns Around Solenoids

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Topic A - Space, time and motion5 subtopics

Topic B - The particulate nature of matter5 subtopics

Topic C - Wave behaviour5 subtopics

Topic D - Fields4 subtopics

Topic E - Nuclear and quantum physics5 subtopics