887017
Pregunta 1
Pregunta
Which generator is used to generate high potential differences using static electricity?
Respuesta
-
Van der Waals generator
-
Van der Graaff generator
-
Van Gogh generator
Pregunta 2
Pregunta
What makes a Perspex rod become positively charged?
Respuesta
-
Gain of electrons
-
Loss of electrons
Pregunta 3
Pregunta
What makes a polythene rod become negatively charged?
Respuesta
-
Gain of electrons
-
Loss of electrons
Pregunta 4
Respuesta
-
Indicator
-
Diode
-
Cell
-
Light-emitting diode
Pregunta 5
Respuesta
-
Heater
-
Fixed resistor
-
Fuse
-
Variable resistor
Pregunta 6
Pregunta
True or false? Current can be defined as the rate of the flow of charge (coulombs per second).
Respuesta
- True
- False
Pregunta 7
Pregunta
True or false? Potential difference can be defined as the work done by each unit of charge (joules per coulomb).
Respuesta
- True
- False
Pregunta 8
Pregunta
What is the SI unit of resistance?
Respuesta
-
Tesla
-
Lux
-
Ampere
-
Ohm
-
Volt
-
Coulomb
Pregunta 9
Pregunta
True or false? The equation connecting current, resistance and potential difference is R = VI.
Respuesta
- True
- False
Pregunta 10
Pregunta
What is an ohmic conductor?
Respuesta
-
A special type of conductor developed by Georg Ohm
-
An electrical component whose current and potential difference are directly proportional at a constant resistance and temperature
-
A conductor whose resistance is greater than 100 ohms
Pregunta 11
Pregunta
For which electrical component would this current-potential difference graph apply?
Respuesta
-
Thermistor
-
Light-dependent resistor
-
Filament bulb
-
Diode
Pregunta 12
Pregunta
For which electrical component would this current-potential difference graph apply?
Image:
diode_graph (image/png)
Respuesta
-
Thermistor
-
Light-dependent resistor
-
Filament bulb
-
Diode
Pregunta 13
Pregunta
True or false? The resistance of a thermistor decreases as temperature increases.
Respuesta
- True
- False
Pregunta 14
Pregunta
True or false? The resistance of a light-dependent resistor increases as light intensity increases.
Respuesta
- True
- False
Pregunta 15
Pregunta
True or false? In a series circuit, the same current passes through all components.
Respuesta
- True
- False
Pregunta 16
Pregunta
True or false? In a series circuit, the potential difference across each component is the same.
Respuesta
- True
- False
Pregunta 17
Pregunta
If there were two resistors in series, each with a resistance of 0.6Ω, what would be the total resistance?
Respuesta
-
0.6Ω
-
6Ω
-
1.2Ω
-
12Ω
Pregunta 18
Pregunta
True or false? In a parallel circuit, the total current is shared through the components.
Respuesta
- True
- False
Pregunta 19
Pregunta
True or false? In a parallel circuit, the potential difference is shared across the components.
Respuesta
- True
- False
Pregunta 20
Pregunta
If there were two resistors in parallel, each with a resistance of 0.6Ω, what would be the resistance in any one "loop" of the circuit?
Respuesta
-
0.6Ω
-
6Ω
-
1.2Ω
-
12Ω
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