BRAINCAKEMagnetism and the motor effect
Revision notes for Magnetism and the motor effect in Edexcel Combined Science (1SC0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Magnetic poles: attraction and repulsionEvery magnet has two ends called poles.
- Uses of permanent and temporary magnetic materialsThe magnetic metals are iron, steel, cobalt and nickel.
- Permanent and induced magnetsA permanent magnet, such as a bar magnet, has its own north and south poles all the time.
- Magnetic fields around magnetsA magnetic field is the region around a magnet where another magnet or a magnetic material feels a force.
- Plotting magnetic fields with a compassA plotting compass is a small magnet, called the needle, that is free to turn.
- The compass and the Earth's magnetic coreA compass needle is a small magnet.
- Magnetic field around a currentAn electric current creates a magnetic field around the wire carrying it.
- Strength of the field around a wireThe strength of the magnetic field around a long straight wire depends on two things: the size of the current and the distance from the wire.
- Solenoids and electromagnetsA solenoid is a long coil of wire.
- Force on a current-carrying conductorWhen a wire carrying a current is placed in the magnetic field of a magnet, the wire experiences a force.
- Interacting magnetic fieldsMagnetic forces are caused by the interaction between magnetic fields.
- Fleming's left-hand ruleFleming's left-hand rule gives the direction of the force on a current-carrying wire in a magnetic field.
- Force on a conductor in a magnetic field (F = B I l)A wire that carries a current in a magnetic field feels a force.