AQA GCSE PHYSICS ELECTRICITY TEST
PAPER FULL SOLUTION QUESTIONS AND
CORRECT ANSWERS GRADED A+
●● switch (open) symbol?
Answer:
●● switch (closed) symbol?
Answer:
●● lamp symbol?
Answer:
●● What's current?
Answer: measure of the flow of electrons around a circuit
●● What's potential difference?
Answer: the force driving the flow of electrons
●● What's resistance?
Answer: everything that resists/opposes flow of electrons
,●● When is pd directly proportional to current? so only for?
Answer: when resistance is constant so theres no change in temperature
(wires and resistors)
●● When resistance is constant, if pd increases?
Answer: current increases and vice versa
●● In a filament lamp is the pd directly proportional to current?
Answer: no because as it emits light it heats up causing resistance to
increases so resistance is no longer constant
●● What is charge?
Answer: a measure of the total current that flowed within a certain
period of time
●● What components are required to provide electric power?
Answer: cell or battery
●● What components are required to control the flow of electricity?
Answer: switch
open switch-allows electricity to flow
closed switch- turns of the circuit so its no longer complete
,●● How does a fuse work?
Answer: breaks if there's too much current
●● What thermistors used for?
Answer: car engines, electronic thermostats
●● In a series circuit what happens when resistance increases?
Answer: voltage increases as current decrease as more force is needed to
drive the electrons through the areas of highest resistance
●● In a parallel circuit, what happens when a component breaks to the
overall circuit?
Answer: the overall circuit will still work as current can flow through
other loops
●● What happens the resistance as we add more components in a
parallel circuit and why?
Answer: lower total resistance as your adding another possible route for
the current to flow
●● What is directs current uses?
Answer: cells,batteries
, ●● Whats alternating current use?
Answer: mains power supply
●● what are the 4 things we must have in a dc series circuit to measure
or test an environmental factor?
Answer: -a power supply(DC battery or cell) to provide constant pd
-a variable sensor(thermistor or LDR)
-a fixed resistor connected in series with the sensor .
-a voltmeter connected in parallel across one of the components to take
the measurment
●● What's the danger of providing a connection between the live wire
and the earth?(pd)
Answer: providing a connection between them creates a massive pd so if
a person touches it a large current will flow through their body leading
to a electrical shock
●● What's the danger of providing a connection between the live wire
and the earth?(current)
Answer: causes a huge surge in current which generates heat which can
cause a electrical fire
PAPER FULL SOLUTION QUESTIONS AND
CORRECT ANSWERS GRADED A+
●● switch (open) symbol?
Answer:
●● switch (closed) symbol?
Answer:
●● lamp symbol?
Answer:
●● What's current?
Answer: measure of the flow of electrons around a circuit
●● What's potential difference?
Answer: the force driving the flow of electrons
●● What's resistance?
Answer: everything that resists/opposes flow of electrons
,●● When is pd directly proportional to current? so only for?
Answer: when resistance is constant so theres no change in temperature
(wires and resistors)
●● When resistance is constant, if pd increases?
Answer: current increases and vice versa
●● In a filament lamp is the pd directly proportional to current?
Answer: no because as it emits light it heats up causing resistance to
increases so resistance is no longer constant
●● What is charge?
Answer: a measure of the total current that flowed within a certain
period of time
●● What components are required to provide electric power?
Answer: cell or battery
●● What components are required to control the flow of electricity?
Answer: switch
open switch-allows electricity to flow
closed switch- turns of the circuit so its no longer complete
,●● How does a fuse work?
Answer: breaks if there's too much current
●● What thermistors used for?
Answer: car engines, electronic thermostats
●● In a series circuit what happens when resistance increases?
Answer: voltage increases as current decrease as more force is needed to
drive the electrons through the areas of highest resistance
●● In a parallel circuit, what happens when a component breaks to the
overall circuit?
Answer: the overall circuit will still work as current can flow through
other loops
●● What happens the resistance as we add more components in a
parallel circuit and why?
Answer: lower total resistance as your adding another possible route for
the current to flow
●● What is directs current uses?
Answer: cells,batteries
, ●● Whats alternating current use?
Answer: mains power supply
●● what are the 4 things we must have in a dc series circuit to measure
or test an environmental factor?
Answer: -a power supply(DC battery or cell) to provide constant pd
-a variable sensor(thermistor or LDR)
-a fixed resistor connected in series with the sensor .
-a voltmeter connected in parallel across one of the components to take
the measurment
●● What's the danger of providing a connection between the live wire
and the earth?(pd)
Answer: providing a connection between them creates a massive pd so if
a person touches it a large current will flow through their body leading
to a electrical shock
●● What's the danger of providing a connection between the live wire
and the earth?(current)
Answer: causes a huge surge in current which generates heat which can
cause a electrical fire
