Physics by Abigail Putri Fortuna https://padlet.com/abig112101/16uasrt4kjwt Current Electricity en-us 2016-08-17 16:19:34 UTC 2024-10-25 03:53:01 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/File.png Potential Difference (Voltage) abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118614113 -Potential Difference (p.d.) is also called voltage
-measured by voltmeter
-unit is volt (V)
-Voltmeter is connected parallel across the component 
]]> 2016-08-17 16:24:08 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118614113 Charge Flow abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118615143 -current direction is always from positive to negative

-While electrons flow from negative to positive

]]> 2016-08-17 16:29:43 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118615143 Electromotive Force abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118615724 -Electromotive force (emf) is a difference in potential that tends to give rise to an electric current
-The cell supplies energy but not charges. Its function is to drive the free electrons in the circuit to flow
-unit of emf is JC-1 or volt, V
-1 V = 1JC-1

]]> 2016-08-17 16:32:43 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118615724 Electric Current abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118616255 -The rate of flow of charge
-a flow of electric charge from 1 point to another
-SI Unit of current = Coulomb/Seconds (C/s) OR Amperes (A)


]]> 2016-08-17 16:35:35 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118616255 Electrical Circuit abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118617048

-The Voltmeter is connected across the relevant components and to measure the voltage

-Ammeters are connected in series, to measure the current 

-Battery/Cell is the supply of energy 

-Resistor is used to maintain a large current to prevent the circuit from breaking/the bulb exploding
-unit is ohm
]]> 2016-08-17 16:39:15 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118617048 Difference of Electromotive Force and Voltage abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118618348 - Emf is the voltage generated by a supply of energy (battery/cell/generator)
-Voltage can be measured between any 2 points, but Emf exists only between 2 ends of a source
-Voltages in a circuit called 'Voltage Drops' are in the opposite direction of Emf, their sum is equal to Emf according to Krichhoff's 2nd law.]]> 2016-08-17 16:46:17 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118618348 Ohm's Law abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118619099
-The greater the resistance in a circuit, the smaller the current flows
-The greater the p.d. in a circuit, the greater the current that flows
]]> 2016-08-17 16:50:35 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118619099 Circuit Symbols abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118619819
]]> 2016-08-17 16:54:56 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118619819 Power abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118619881 -Electrical power is the rate of using electrical energy
-measured in joules/second (J/s) ( JS-1 )
]]> 2016-08-17 16:55:20 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118619881 abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118620019 2016-08-17 16:56:15 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118620019 abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118620137 2016-08-17 16:56:57 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118620137 abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118620241 2016-08-17 16:57:38 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118620241 abig112101 https://padlet.com/abig112101/16uasrt4kjwt/wish/118620284 2016-08-17 16:57:50 UTC https://padlet.com/abig112101/16uasrt4kjwt/wish/118620284