Electricity Flashcards
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1
Q
- Simple device that generates electricity.
A
CELL
2
Q
- The metal or graphite rod in an electric cell.
A
ELECTRODE
3
Q
- Instrument for measuring potential difference or voltage.
A
Voltmeter
4
Q
- Substance that does not allow electrons to pass through.
A
INSULATOR
5
Q
- A screwdriver placed across two wires in a circuit creates a _____ circuit.
A
SHORT
6
Q
- Instrument to measure current.
A
AMMETER
7
Q
- Type of electricity produced by rubbing plastic on wool.
A
STATIC
8
Q
- Substance that allows electrons to pass through easily.
A
CONDUCTOR
9
Q
- DC stands for_______________.
A
DIRECT CURRENT
10
Q
- Device that increases or decreases voltage.
A
TRANSFORMER
11
Q
- Household circuits are of this type.
A
PARALLEL
12
Q
- Voltage divided by current is the _______.
A
RESISTANCE
13
Q
- Wire that discharges excess electricity to the earth.
A
EARTH
14
Q
- Protective device which “blows” if there is excess electricity in a house circuit.
A
FUSE
15
Q
- Unit of potential difference or voltage.
A
VOLT
16
Q
- Unit of resistance.
A
OHM or OHMS
17
Q
- Current electricity is a flow of _______ along a wire.
A
ELECTRONS
18
Q
- A series of cells.
A
BATTERY
19
Q
- Circuit where components are placed one after the another.
A
SERIES
20
Q
- Unit of current.
A
AMPERE
21
Q
- AC stands for ____________.
A
CURRENT
22
Q
- Yellow metal used in electrical wires.
A
Copper
23
Q
- Solution in an electric cell.
A
Electrolyte
24
Q
- Making of electricity is called ____________.
A
Electricity Generation
25
Q
- This is a number of joules per coulomb of charge, it is measured in volts.
A
Potential Differences or Volts (V)
26
Q
- The amount of charge per second passing a point in a circuit, it is measured in amps(A).
A
Current(I)
27
Q
- A ratio of potential differences across a component to the current flowing through it, it is measured in ohms.
A
Resistance (symbol)
