Models
Speed of water in a pipe
What is current in this model?
Amount of charge flowing past a point per second
What is current?
A circuit component that can open or close
What is a switch?
5 ohms
What is resistance?
Increase the length of wire
How can we increase resistance?
Amount of parcels a delivery truck picks up at the supply depot
What is voltage in this model?
The difference in energy per charge between two points in a circuit
What is voltage?
A portable circuit component that supplies energy
What is a battery/cell?
2 A
What is current?
Increase the thickness of the wire
How can we decrease resistance?
The muddy tracks a donkey walks along
What is the wire in this model?
A measure of opposition to charge flow OR how hard it is for charge to flow
What is resistance?
A circuit component that turns electrical energy into heat
What is a resistor?
I x R
What is the equation for voltage?
Use a lower resistance bulb
How can we increase brightness?
The thickness of the nozzle of the hose
What is resistance in this model?
The amount of energy transformed (by a circuit component) per second
What is power?
A circuit component that measures the current
What is an ammeter?
V x I
What is the equation for power?
Use a higher voltage battery
How can we increase current?
The electric pump causing the water to move
What is the powerpack in this model?
The capacity to do work or push something and make it move
What is Energy?
A circuit component that measures the energy difference (per charge) between two points in a circuit
What is a voltmeter?
20 Joules per second
What is Power?
Use a resistor with higher resistance
How we decrease current? or How can we decrease heat output?