Friday, 21 February 2014

Physics Scribing 20/02/14

Postivite Charges, they cannot be transported. Only electrons can.

When defining an ohmic conductor, say that 'it obeys Ohm's Law' as well as defining Ohm's law.

Resistance ≠ How difficult it is for an electric current to pass.
Instead, Resistance refers to the ratio of the potential difference (V) across the component to the current (I) flowing through it.

An earthed point can also create a flow as it has 0V. 
If the earth is at the positively charged part of wire, the current will flow into the earth.
If the earth is at the negativelt charged part of wire, the current will flow from the earth.

Don't be vague when answering a question. Period. :D

Isn't this shocking?
You need to charge me 5 coulombs for making you laugh.
The potential difference between us has caused some resistance in our current situation

1 comment:

  1. To clarify on your first sentence, it's the "protons" that cannot be transported (as they're inside the nucleus). Positive charges can include other stuff like ions e.g. Na+, Fe2+ etc, and these positive charges can be transported.

    Appreciate your sense of humour, but I think your summary is a little too brief... are you sure this is all I mentioned in 50 min?