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