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Physics Unit 5, module 1


Sameer Jahabarali Physics




Electric fields are created electric charges, in which the field strengths represent the
force experienced per unit positive charge. Electric field lines represent:

Direction of force, through the arrows represented (positive repels if a
charge which is relatively more negative, which will…

Page 2

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Physics Unit 5, module 1


Sameer Jahabarali Physics






Magnetic fields
Magnetic field is a region where particles with magnetic properties and moving, charged particles with
experience a force.

A magnetic field is induced by two types of magnets:

Permanent magnets- magnets with North and South pole that has a
magnetic…

Page 3

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Physics Unit 5, module 1


Sameer Jahabarali Physics




Knowing that a current flow can induce a magnetic field, it is also possible to induce an emf (electron motive
force- voltage (energy make current (electron) flow)). This is done by some way of "sweeping" a conductor
across a magnetic field, where…

Page 4

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Physics Unit 5, module 1


Sameer Jahabarali Physics



AC generator is used to supply electricity as it is more efficient, because resistance can be reduced by
transforming electricity by:

Step- up- number of turns of secondary coil is greater than primary. This increases voltage,
decreases current (conservation of energy)
Step-down-…

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