Electrical Circuits

Question 1

Ammeter

Answer 1

component used to measure the electrical current going through a component in an electrical circuit

Question 2

Amperes

Answer 2

unit of current

Question 3

Conventional Current

Answer 3

in solid conductors, conventional current flows from positive to negative, even though electrons flow from negative to positive

Question 4

Coulombs

Answer 4

unit of charge

Question 5

Current

Answer 5

(1) the rate of flow of electrical charge
(2) a stream of charged particles moving through an electrical conductor, whose size is determined by the charge flow and time

Question 6

Earthing

Answer 6

the process in which electric energy is instantly discharged directly to the earth through a low resistance wire, e.g. lightening wires, reducing risk of electric shock as energy is transferred down the wire quicker than it could anyone

Question 7

Electric Field

Answer 7

a charged object creates an electrical field around itself, which is strongest closest to the object. Charged objects placed within this field would experience a force.

Question 8

Ion

Answer 8

a charged atom, becomes charged when you add electrons

Question 9

Joules

Answer 9

unit of energy

Question 10

Light Dependent Resistor

Answer 10

decreases its resistance as light intensity increases, is useful in light sensors

Question 11

Ohmic

Answer 11

where resistance remains constant as current changes

Question 12

Ohm’s Law

Answer 12

where resistance remains constant as current changes

Question 13

Parrallel Current

Answer 13

a circuit where there is more than one loop of components

Question 14

Particle Acceleration

Answer 14

process for accelerating subatomic particles

Question 15

Particle Accelerator

Answer 15

apparatus for accelerating subatomic particles

Question 16

Pipe Earthing

Answer 16

when electricity is sent down a pipe into the ground

Question 17

Plate Earthing

Answer 17

where electricity is sent to an underground plate

Question 18

Potential Difference

Answer 18

the difference in energy of the charge carries before and after a component

Question 19

Resistance

Answer 19

the amount that a component or circuit opposes the flow of the current

Question 20

Series Circuit

Answer 20

a circuit where all of the components are connected in one loop. The current is the same through each component and the potential difference and resistance is shared between the components

Question 21

Static

Answer 21

energy related to static -still- electrons which build up on materials. When certain insulating materials are rubbed against each other they become charged as negatively charged electrons are rubbed off one material and onto the other, meaning the material that gains electrons becomes negatively charged, and the material that loses electrons is left with an equal positive charge

Question 22

Static Charge

Answer 22

where an insulator is charged up by friction, causing electrons to either be rubbed onto or rubbed off the object causing them to be charged, only the negative charge move

Question 23

Thermistor

Answer 23

a resistor that decreases its resistance as temperature increases, is useful in thermostats

Question 24

Voltmeter

Answer 24

a component used to measure the potential difference across a component