Voltage, Resistance, and Current
The _____________ of a wire depends on the type of material and the length and thickness of the wire.
Resistance
A parallel circuit has _________ path(s).
A circuit with only one path.
Series
The unit that measures voltage is _____________.
Volts
Current that changes direction regularly is ___________ current.
Alternating
If you add more bulbs to a series circuit, then the bulbs will ______________.
Dim
If you add more bulbs in parallel, then the bulbs will _________.
Not change brightness
A circuit with 4 paths.
Parallel
The unit that measures resistance is _____________.
Ohms
Wet-cell batteries and dry-cell batteries produce ___________ current.
Direct
If you add more batteries in series then the voltage will ___________.
If you add more batteries in parallel then the voltage will ___________.
When a second bulb is added to a circuit the brightness of the first bulb decreases. The second bulb was added in ___________.
Series
The unit that measures ____________ is amperes.
Current
How is resistance useful?
ex. It controls current and prevents fires, provides heat ... AND FREE POINTS
If one bulb goes out in a series circuit what happens to the other bulbs?
They go out.
If one bulb goes out in a parallel circuit what happens to the other bulbs?
Nothing
The strands of bulbs on a Christmas Tree are ______.
Parallel
The unit that measures electrical power is __________.
!!! FREE POINTS !!!
Kilowatt-hours
How much current is flowing through a circuit with 26 volts and a resistance of 10 ohms?
2.6 Amps
Why are fuses and circuit breakers useful?
!! FREE POINTS !!
They break circuits when they become dangerous.
If two batteries are connected to a circuit in parallel, what is the voltage of the circuit if one battery is a 9V and the other is a 1.5V?
9V AND FREE POINTS!!
What are some problems you might encounter if you connected all the devices in your kitchen in series? Give an example
ex. Fire, Low Voltage to appliances, Burnouts turning your freezer off
The unit that measures ___________ is watts.
???Whatt????
!!! FREE POINTS !!!
Power