electricity

Question 1

Identify the three subatomic particles, their location and their charge

Answer 1

1 - protons are found in the nucleus of an atom and have a positive charge
2 - neutrons are found in the nucleus of an atom and have a neutral charge
3 - electrons are found in the outer parts of atoms and have a negative charge

Question 2

Distinguish between static and dynamic electricity.

Answer 2

Static electricity involves a buildup of electric charge on a surface, often due to friction, and is stationary or not moving. Dynamic electricity, also known as electric current, is the flow of electrons through a conductor, typically used to power devices

Question 3

Identify circumstances where charged objects will attract and repel

Answer 3

like charges repel and opposite charges attract

Question 4

Describe dynamic electricity in terms of movement of charged particles

Answer 4

continuous, directed movement of charged particles, typically electrons, through a conductive material

Question 5

Use internationally recognised symbols for components of electrical circuits. (power source, conducting wire, open switch, closed switch, light globe, ammeter, voltmeter, resistor and variable resistor

Answer 5

power soure/cell - —–l i—–
wire - ——-
open switch/off - —–/ —-
closed switch/on - ——/l—–
light globe - (x)
Ammeter - (A)
voltmeter - (V)
_____
resistor - —–[____]—– _ _______
variable resistor - —–[_/___]——-

Question 6

Draw circuit diagrams of series and parallel circuits

Answer 6

pencil and ruler

Question 7

Compare the characteristics of series and parallel circuits.

Answer 7

In a series circuit, components are connected end-to-end, forming a single path for current, while in a parallel circuit, components are connected across each other, creating multiple paths for current flow

Question 8

describe current

Answer 8

flow of an electrical current, often the flow of electrons through a conductor

Question 9

identify the symbol used for current, the units it is measured in and the units symbol

Answer 9

the symbol is I
it is measured in amps
amps symbol is A

Question 10

Describe voltage

Answer 10

voltage is the potential difference that pushes charged electrons through a conducting loop

Question 11

Identify the symbol used for voltage, the units it is measured in and the units symbol

Answer 11

the symbol for voltage is V
it is measured in volts
the symbol for volts is V

Question 12

Describe resistance.

Answer 12

resistance is how much a material or object opposes the flow of electrical current

Question 13

identify the symbol used for resistance, the units it is measured in and the units symbol

Answer 13

the symbol for resistance is R
resistance is measure in ohms
the symbol for ohms is Ω

Question 14

Use Ohm’s to explain the relationship between voltage, current and resistance

Answer 14

ohms law shows that the current is directly proportional to the voltage and inversly proportional to the resistance
if the voltage is doubled the current is doubled
if the resistance is doubled the current is halfved

Question 15

Recall the formula for Ohm’s law

Answer 15

V=IR
voltage = current x resistance

Question 16

Use Ohms law to calculate resistance

Answer 16

R=V/I
resistance = voltage / current

Question 17

Draw a graph of an Ohmic conductor

Answer 17

a straight line passing through the origin on a plot of current (I) versus potential difference (V)

Question 18

Correctly connect a voltmeter to measure the voltage across a component in an electrical circuit

Answer 18

you connect a voltmeter in parallel to the certain component meaning it is only connected to the object and nothing else

Question 19

Correctly connect an ammeter and measure the current in an electrical circuit

Answer 19

you connect an ammeter in series in the electrical circuit meaning it is apart of the circuit and you have to break apart the circuit to attach it