Magnetism (2 Parts)

Synopsis
Part 1 explains the Lorentz force by considering a free-moving positively charged particle in a uniform magnetic field and the ‘right-hand’ screw is defined. The helical motion resulting from the application of magnetic force to moving particles (both positive and negative) is then dealt with. Continues with an explanation of the forces exerted by a magnetic field on the carriers in a current carrying semi-conductor material (Hall effect). Finally the forces on a straight conductor and rectangular loop are examined.
Part 2 describes the magnetic field produced by a long wire carrying a current and defines the relationship between magnetic induction B and magnetic field strength H. The magnetic field around a circular hoop, a solenoid and a toroid are then analysed. Concludes with an explanation of the three types of magnetism - ferro, para and dia.
Language
English
Country
Great Britain
Medium
Film; Video; Film. 16mm. sd. col. 2 X 22 min. Videocassette. VHS. col. 2 X 22 min.
Technical information
Black-and-white / Sound
Year of production
1969
Availability
OUT OF DISTRIBUTION
Uses
To assist with the teaching of electricity and magnetism at sixth form level; first-year university physics courses.*
Subjects
Physics
Keywords
electromagnetism; magnetism

Distribution Formats

Type
Film
Format
16mm

Sections

Title
Lorentz force and Hall effect, The
Synopsis
Part 1 explains the Lorentz force by considering a free-moving positively charged particle in a uniform magnetic field and the 'right-hand' screw is defined. The helical motion resulting from the application of magnetic force to moving particles (both pos

Title
The magnetic field of a current
Synopsis
Part 2 describes the magnetic field produced by a long wire carrying a current and defines the relationship between magnetic induction B and magnetic field strength H. The magnetic field around a circular hoop, a solenoid and a toroid are then analysed. C

Production Company

Name

Philips Industries

Distributor

Name

Guild Sound & Vision

Notes
for management & training programmes, see Training Services Ltd

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