Teachers Notes - Edinburgh International Science Festival
... When a magnet is passed over a wire, it pushes the electrons in the wire causing them to move. This movement is an electric current. If the magnet can be moved over the wire repeatedly, the current will keep on being produced. ...
... When a magnet is passed over a wire, it pushes the electrons in the wire causing them to move. This movement is an electric current. If the magnet can be moved over the wire repeatedly, the current will keep on being produced. ...
Electricity from Magnetism
... • When you use an electric appliance or turn on a light in your home, you probably don’t think about where the energy comes from. • How does a magnetic field produce electric current? ...
... • When you use an electric appliance or turn on a light in your home, you probably don’t think about where the energy comes from. • How does a magnetic field produce electric current? ...
magnetic field
... 9. A charged particle experiences no magnetic force when moving parallel to a magnetic field, but when it is moving perpendicular to the field it experiences a force perpendicular to both the field and the direction of motion. 10. A current-carrying wire in a perpendicular magnetic field experiences ...
... 9. A charged particle experiences no magnetic force when moving parallel to a magnetic field, but when it is moving perpendicular to the field it experiences a force perpendicular to both the field and the direction of motion. 10. A current-carrying wire in a perpendicular magnetic field experiences ...
Name___________________________________ Physical
... 10) Which phenomenon best illustrates the relationship between electricity and magnetism? A) a current in a copper wire affects a compass needle B) a magnet attracts iron wire but not copper wire C) a piece of polished steel reflects electromagnetic waves D) an electric motor causes radio interferen ...
... 10) Which phenomenon best illustrates the relationship between electricity and magnetism? A) a current in a copper wire affects a compass needle B) a magnet attracts iron wire but not copper wire C) a piece of polished steel reflects electromagnetic waves D) an electric motor causes radio interferen ...
MAGNETISM
... Two wires are coiled around opposite sides of a closed iron loop. One wire is attached to a source of alternating current, such as a power outlet. The other wire is attached to an ...
... Two wires are coiled around opposite sides of a closed iron loop. One wire is attached to a source of alternating current, such as a power outlet. The other wire is attached to an ...
Notes-Electromagnetic Induction
... Here is the solenoid (coil of wire) Here is a Galvanometer (measures electric current and direction of the current) The bar magnet is pushed back and forth through the solenoid ...
... Here is the solenoid (coil of wire) Here is a Galvanometer (measures electric current and direction of the current) The bar magnet is pushed back and forth through the solenoid ...
Magnetism
... However, Faraday's Law does not determine the direction of the current produced. That is ...
... However, Faraday's Law does not determine the direction of the current produced. That is ...
Budgeting - Learning While Doing
... • The armature is an electromagnet made by coiling thin wire around two or more poles of a metal core. • The armature has an axle, and the commutator is attached to the axle. • When you run electricity into this electromagnet, it creates a magnetic field in the armature that attracts and repels the ...
... • The armature is an electromagnet made by coiling thin wire around two or more poles of a metal core. • The armature has an axle, and the commutator is attached to the axle. • When you run electricity into this electromagnet, it creates a magnetic field in the armature that attracts and repels the ...
Digital Design
... “It is well known that if we attempt to apply Maxwell's electro-dynamics, as conceived at the present time, to moving bodies, we are led to asymmetry which does not agree with observed phenomena. Let us think of the mutual action between a magnet and a conductor. The observed phenomena in this case ...
... “It is well known that if we attempt to apply Maxwell's electro-dynamics, as conceived at the present time, to moving bodies, we are led to asymmetry which does not agree with observed phenomena. Let us think of the mutual action between a magnet and a conductor. The observed phenomena in this case ...
Unit 3 Lesson 5 Electromagnetism
... • An electric motor changes electrical energy into mechanical energy. • Electric motors range in size from large motors, used to power Ferris wheels, to small motors used in computer cooling fans. Almost every time a device uses electricity to make something move, there is a motor involved. ...
... • An electric motor changes electrical energy into mechanical energy. • Electric motors range in size from large motors, used to power Ferris wheels, to small motors used in computer cooling fans. Almost every time a device uses electricity to make something move, there is a motor involved. ...
Physics Time: 3 Hours Max. Marks: 70
... m-3. Find the drift velocity of electrons if a potential gradient of 1 Vm-1 is applied across X. Q. 18. What type of materials are used for making a. Permanent magnets b. Transformer cores. Give two line reasons for each Q. 19. In the circuit, what is the reading of the voltmeter? What resistance sh ...
... m-3. Find the drift velocity of electrons if a potential gradient of 1 Vm-1 is applied across X. Q. 18. What type of materials are used for making a. Permanent magnets b. Transformer cores. Give two line reasons for each Q. 19. In the circuit, what is the reading of the voltmeter? What resistance sh ...
Superconducting magnet
A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire can conduct much larger electric currents than ordinary wire, creating intense magnetic fields. Superconducting magnets can produce greater magnetic fields than all but the strongest electromagnets and can be cheaper to operate because no energy is dissipated as heat in the windings. They are used in MRI machines in hospitals, and in scientific equipment such as NMR spectrometers, mass spectrometers and particle accelerators.