Electricity Flashcards
1
Q
Power supply
A
Can supply direct or alternating current
2
Q
Potentiometer
A
For measuring voltage to high precision
A potentiometer can also be used as a variable d.c. source
3
Q
Extra high tension power supply
A
High voltage of a few thousand volts.
4
Q
Cathode ray oscilloscope
A
Measures voltage and time/period of voltage waveform.
5
Q
Ohmmter
A
To measure resistance. Do not use battery
6
Q
Variable resistance
A
A long piece of uniform bare resistance wire with a sliding contact can be used.
7
Q
2 parallel plates with constant PD
A
Uniform E-field is produced.
8
Q
Motor
A
a.c/d.c, works by converting electrical to mechanical energy
9
Q
Amplifier
A
Magnifies voltage
