Circuit basics
This must be complete, with no gaps, for charge to move continuously.
What is a closed circuit / complete conducting path?
This quantity describes the rate at which charge moves through a circuit.
What is current?
Power is measured in this unit, abbreviated W.
What is a watt?
As charge moves through components connected in series, this quantity stays the same.
What is current?
These TWO devices from our unit can both supply voltage to a circuit.
What are a battery and a generator?
In a simple hand-generator circuit, these TWO things must happen for the bulb to light.
What are closing the circuit and cranking the generator?
This is the SI unit of electric charge, abbreviated C.
What is a coulomb?
This quantity describes energy transferred per unit charge.
What is voltage / electric potential difference?
In a series circuit, the individual voltage "drops" do this to equal the source voltage.
What is: they add together to equal....
A battery and generator perform a similar function in our circuit model, but this feature is different when we draw them in schematics.
What are their schematic symbols?
This protective device breaks a circuit when the current becomes too large.
What is a fuse?
Current is measured in this unit, abbreviated A.
What is an ampere (amp)?
Voltage is measured in this unit, abbreviated V.
What is a volt?
Two identical bulbs are connected in series to a 6 V battery. This is the voltage across each bulb.
What is 3 V?
When a blinking bulb turns ON, you notice this change while cranking the generator.
What is: the generator becomes harder to turn?
Complete this relationship: 1 A = ______.
What is 1 C/s (one coulomb per second)?
Complete this relationship:
1 V = ______.
What is 1 J/C (one joule per coulomb)?
A hand generator is connected to a light bulb in a closed circuit. When the bulb lights up, the generator becomes harder to crank. Explain WHY this happens in terms of energy.
What is: The generator converts mechanical energy into electrical energy, which the bulb transforms into light and thermal energy. The person cranking must do more work to supply that energy.