physics – magnetism - Strive for Excellence Tutoring
... The left hand rule is used to determine the direction of the magnetic force from a magnetic field on a current. To use the left hand rule, we need to follow the steps below: 1. The index finger represents the magnetic field (B) and points straight ahead 2. The middle finger represents the current (I ...
... The left hand rule is used to determine the direction of the magnetic force from a magnetic field on a current. To use the left hand rule, we need to follow the steps below: 1. The index finger represents the magnetic field (B) and points straight ahead 2. The middle finger represents the current (I ...
Science 9 Unit 4: Electricity Name
... Some motors run on direct current (DC). It is 'direct', because the electricity flows in only one direction. Alternating current (AC) flows back and forth 60 times per second. ...
... Some motors run on direct current (DC). It is 'direct', because the electricity flows in only one direction. Alternating current (AC) flows back and forth 60 times per second. ...
Magnets Lodestone Magnetic Poles Magnetic Domains Magnetic
... • In a magnet the domains are always lined up. • A magnetic field can force atoms to line up in other substances. • A shock (physical or electrical) and high temperatures will cause demagnetization. ...
... • In a magnet the domains are always lined up. • A magnetic field can force atoms to line up in other substances. • A shock (physical or electrical) and high temperatures will cause demagnetization. ...
Chapter 8 Test Review – Electricity and Magnetism
... Be able to determine which bulb or buzzer would turn on if various switches were opened or closed (circuit worksheet) Define permanent magnet, electromagnet – advantages/disadvantages o Permanent magnet = maintains magnetic properties all the time, cannot turn off o Electromagnet = coil, current, co ...
... Be able to determine which bulb or buzzer would turn on if various switches were opened or closed (circuit worksheet) Define permanent magnet, electromagnet – advantages/disadvantages o Permanent magnet = maintains magnetic properties all the time, cannot turn off o Electromagnet = coil, current, co ...
1. All the vehicles are travelling at 20 m/s which vehicle has the
... What is the shape of a magnetic field? A magnet is any material that attracts iron and materials that contain iron. Rocks containing the mineral magnetite attract materials that contain iron and also attract or repel other magnetic rocks. The attraction or repulsion of magnetic materials is called m ...
... What is the shape of a magnetic field? A magnet is any material that attracts iron and materials that contain iron. Rocks containing the mineral magnetite attract materials that contain iron and also attract or repel other magnetic rocks. The attraction or repulsion of magnetic materials is called m ...
8J Magnets and electromagnets
... north and south pole. Magnetism is the force that pulls the opposite poles of two magnets together or pushes the same poles of two magnets apart. ...
... north and south pole. Magnetism is the force that pulls the opposite poles of two magnets together or pushes the same poles of two magnets apart. ...
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.