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WorksheetsYr 9 Electricity
Total questions: 10
Worksheet time: 5mins
What is needed for electrical charge to flow through a closed circuit?
Resistance
Power
Energy
Voltage
At any point in a single closed loop, the current is
The same
twice as much at the end as it was at the beginning
half as much at the end as it was at the beginning
Divided between components
The current through any component depends on
The energy and charge
The power and time
The voltage and resistance
The capacitance and voltage
What is resistance measured in?
Volts
Ohms
Amperes
Joules
What is an ohmic conductor?
A conductor in which power is proportional to voltage at a given temperature
An insulator in which current is proportional to voltage at a given temperature
A conductor in which current is proportional to voltage at a given temperature
An insulator in which power is proportional to charge at a given temperature
Describe current flow in a diode
Current flows in only the same direction the diode is pointing
Current flows in only the opposite direction that the diode is pointing
Current doubles in the direction that the diode is pointing
Current doubles in the opposite direction that the diode is pointing
Describe the function of an LDR
It increases the resistance as light intensity increases.
It decreases the resistance as light intensity increases.
It only allows current to flow in one direction
It allows current to flow in one direction if light intensity decreases.
What current flows in both directions and who was it discovered by?
DC-Edison
DC- Tesla
AC- Edison
AC- Tesla
What is a transformer?
Increases and decreases the voltage and current
Increases and decreases the power and time
Increases and decreases the charge and energy
Increases and decreases the resistance and charge
What is an electric field?
The area around an appliance where you can feel electricity
The area around an appliance where you can see electricity
The area around an appliance where a charged particle experiences a force
The area around an appliance where you could be potentially harmed by an electric shock.
