Circuits Flashcards
1
Q
Do Ammeters go in series or parallel
A
Series
2
Q
Do voltmeters go in parallel or series
A
Parallel
3
Q
What is the formula that links -potential difference
-Charge
-energy
A
E = VQ
4
Q
What is the formula that links
- charge
- current
- time
A
Q = It
5
Q
What is the formula that links
- potential difference
- current
- resistance
A
V = IR
6
Q
Describe the graph of a resistor
A
Directly proportional
7
Q
Describe the graph of a filament bulb
A
Current decreases at high levels of voltage
Line through the origin
8
Q
Describe the graph of a diode
A
Rapid increase at 0.3 volts
9
Q
Why does the resistance increase at high levels of voltage in a filament bulb?
A
The particles in the filament start to vibrate as they gain energy, meaning it’s harder for electronic charges to flow
