the current in the a magnetic field can models students have conductor be changed. built themselves. the length of conductor in Use and the Investigate both the size the magnetic field. equation to calculate and direction of the For a conductor at any missing value force on a conductor in angles to a magnetic field when given other a magnetic field. This and carrying a current: values. can be done when making simple motors = magnetic f lux density State the units of by wrapping more wire × current × length force, magnetic flux around, increasing the density, current and [ F = B l ] Ι potential difference or length. using stronger magnets. F, in newtons, N Convert units into SI magnetic flux density, B, in units as required and tesla, T use standard form as required. current, in amperes, A Ι, (amp is acceptable for ampere) length, in metres, m l, 4.6.3.6 (HT only) Describe a simple 1 WS 1.2 Class practical the – motor. electric motor. A simple electric motor Apply Fleming’s left-hand rule consists of a rectangular coil Apply Fleming’s to a simple electric motor. Research applications of of wire that is free to turn in rule to a simple electric motors and WS 1.4 the magnetic field of a electric motor. commutators. permanent magnet. A
the current in the conductor the length of conductor in the magnetic field. For a conductor at angles to a magnetic field and carrying a current: = magnetic f lux density × current × length [ F = B Ι l ] F, in newtons, N magnetic flux density, B, in tesla, T current, Ι, in amperes, A (amp is acceptable for ampere) length, l, in metres, m a magnetic field can be changed. Use and the equation to calculate any missing value when given other values. State the units of force, magnetic flux density, current and length. Convert units into SI units as required and use standard form as required. models students have built themselves. Investigate both the size and direction of the force on a conductor in a magnetic field. This can be done when making simple motors by wrapping more wire around, increasing the potential difference or using stronger magnets. 4.6.3.6 (HT only) A simple electric motor consists of a rectangular coil of wire that is free to turn in the magnetic field of a permanent magnet. A Describe a simple motor. Apply Fleming’s rule to a simple electric motor. 1 WS 1.2 Apply Fleming’s left-hand rule to a simple electric motor. WS 1.4 Class practical – the electric motor. Research applications of electric motors and commutators.
AQA-8465-SOW-ISLD.DOCX