The Standard
Assignments
Electric Fields
An electric field is a region in space where a charged object experiences a force.
We draw electric fields using field lines. Field lines are drawn:
Below are some common shapes of electric fields surround different shaped objects
We draw electric fields using field lines. Field lines are drawn:
- From positive to negative
- They never cross
- Their spacing represents their strength (the closer they are the stronger the field strength)
- They always meet conductors at right angles
Below are some common shapes of electric fields surround different shaped objects
The force (F) on a charged particle is equal to the electric field strength (E, not to be confused with E for energy) at its location times its charge (q) or F = Eq. This means the electric field strength is equal to the force on a charged particle divided by its charge or E = F/q.
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DC Electricity
Sometimes when you try and make circuits in real life to show the theoretical principles you are learning in class it doesn't work quite right. It doesn't mean that physics is wrong it means there are extra complications like component tolerance and temperature complicating the outcome of experiments.
This simulation shows exactly what is happening in DC circuits, including how the electrons move, without the real-world complicating things
This simulation shows exactly what is happening in DC circuits, including how the electrons move, without the real-world complicating things
Video lessons
Electromagnetism (Motor effect and induction)
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