Physics Electricity & Magnetism

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/11

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

12 Terms

1
New cards

What is static electricity?


A buildup of charge where electrons move between materials and jump back to a positive surface.

2
New cards

Static Electricity: Def 


is the result of the imbalance of electrons on a surface

3
New cards

Magectic

  • all magnets have a south and north pole

  • opposite poles attract each other

  • same poles repel each other

  • permanent magnets have a permanent magnetic field surrounding them

  • field lines show the direction of the force at any point on an imaginary single north pole that is placed near the magnet

<ul><li><p><span><span>all magnets have a south and north pole</span></span></p></li><li><p><span><span>opposite poles attract each other</span></span></p></li><li><p><span><span>same poles repel each other</span></span></p></li><li><p><span><span>permanent magnets have a permanent magnetic field surrounding them</span></span></p></li><li><p><span><span>field lines show the direction of the force at any point on an imaginary single north pole that is placed near the magnet</span></span></p></li></ul><p></p>
4
New cards

DC

Direct current the electrons always travel in the same direction

Examples:

Electronics (Computers, phones, etc) use DC

<p><span><span>Direct current the electrons always travel in the same direction</span></span></p><p></p><p style="text-align: left;">Examples:</p><p style="text-align: left;"><span><span>Electronics (Computers, phones, etc) use DC</span></span></p>
5
New cards

AC

Alternating current the direction the electrons travel alternates direction 50 times every second

Examples:

Household appliances (Fridges, toasters, kettles) use AC

<p><span><span>Alternating current the direction the electrons travel alternates direction 50 times every second</span></span></p><p></p><p style="text-align: left;">Examples:</p><p style="text-align: left;"><span><span>Household appliances (Fridges, toasters, kettles) use AC</span></span></p>
6
New cards

electromagnets


a current carrying wire produces its own magnetic field - called electromagnetism

  • if you place a compass near a current carrying wire, it will line up with the electric field

  • no current = no electric field

  • current flowing = coil has a magnetic field similar to that of a bar magnet

7
New cards

Electromagnets How its created

created by moving electric charges — electric currents produce magnetic fields, and changing magnetic fields induce electric fields.

8
New cards

generators

  • a device that converts movement energy into electricity

  • generators are found in steam turbines, gas turbines, water turbines

9
New cards

A Basic Generator has

  1. a wire loop, being rotated

  2. a permanent magnet

  3. a slip ring communicator

  • rotating the wire inside a magnetic field induces a current in the wire

  • generators use kinetic energy to create electrical energy

10
New cards

fuses

High Resistance wires that have a low melting point. The wire will melt if to much current flows, breaking the circuit.

11
New cards

Circuit Breakers

A switch that flips to break the circuit if to much current is flowing through a circuit

12
New cards

Safety Switch

A device that shuts off the supply to a circuit when a different current is measured on the active and neutral lines.