What is ionising?
The loss / gain of electrons in an atom
How do you calculate the total resistance in series circuit?
R total = R1 +R2 ……..
How do you calculate the total resistance in a parallel circuit?
1/ R total = 1/R + 1/R …….
What is DC?
Direct current is the flow of charge in one direction
What is AC?
A flow of charge which repeatedly changes direction and current in a certain period of time
When using a voltmeter, which way is it applied and what resistance must it have?
In parallel to the circuit and must have high resistance.
When using an ammmeter which way is it applied and what resistance does it have?
Applied in any way and very little resistance
What is voltage?
It is created by the separation of charge (power source)and is the electrical pressure that pushes electrons (current flow) through a closed circuit.
What is resistance?
The opposition against the flow of current in a circuit. The resistance comes in the form of collisions that occur as a current flows through a material with low conductance (resistor).
What is a coloumb?
The charge of a single electron/ number of charges in an electron.
1 coloumb = 6.24 x 10 ^18 electrons
Electrolysis?
When the electrolyte (liquid) is broken down in its negative and positive components have been separated due to a voltage applied.
What is load?
Resistance
What is a conductor?
A material tags allows current flow with little resistance
Insulator?
A material that doesn’t allow current to flow with ease and has high resistance.
What is a generator?
A device that separates charges and produces electrical voltage. It draws electrons from a positive pole and transports them to the negative pole whilst maintains potential difference.
What is the charge of electron?
-0.1602 x 10^-18
