11 points on current electricity:
1. When electrons repel against each other, it creates energy. Through a conductor, this energy has many uses such as providing energy for various electronic applications.
2. When the charge is transferred from the conductor, the flow of the is called electric current.
3.In some ways, electrons flowing in a conductor is a lot like water flowing in a water-pipe.
4. The rate of current can be calculated with the following equation:
I(current in amperes) = Q(charge in coulombs)/ t(time in seconds)
5. Conventional current assumes the current flows out of the positive terminal. But in reality, this idea is wrong. The current actually flows out of the negative terminal and enters through the object's positive terminal. http://www.mi.mun.ca/users/cchaulk/eltk1100/ivse/ivse.htm
6. A way of measuring current is by using an ammeter. You must make the ammeter a part of the circuit in order to measure the current and the ammeter must be a very good conductor so the energy do not escape from it.
7. In a direct current, electrons flows in one direction but in an alternating current, electrons sometimes travels backwards.
8. http://www.kpsec.freeuk.com/symbol.htm (a site all about Drawing circuits and circuits symbols)
9. The electric potential difference can be calculated with the following equation:V (potential difference)= E(energy) / Q (charge)
10. A measuring device for potential energy difference would be a voltmeter. A voltmeter needs to be connected with a load in the circuit in order to function. Unlike a ammeter, a voltmeter must have a great resistance for the energy passed on to the object to minimize the current diverted in the circuit.
11. electricity, transfer of energy and convection is all very useful to meteorologists.
checked.
ReplyDelete