Test
AQA GCSE Physics Unit 2.4
Preguntas del test (20)
1Which generator is used to generate high potential differences using static electricity?
- AVan der Waals generator
- BVan der Graaff generator
- CVan Gogh generator
2What makes a Perspex rod become positively charged?
- AGain of electrons
- BLoss of electrons
3What makes a polythene rod become negatively charged?
- AGain of electrons
- BLoss of electrons
4What is this the circuit symbol for?
- AIndicator
- BDiode
- CCell
- DLight-emitting diode
5What is this the circuit symbol for?
- AHeater
- BFixed resistor
- CFuse
- DVariable resistor
6True or false? Current can be defined as the rate of the flow of charge (coulombs per second).
- AVerdadero
- BFalso
7True or false? Potential difference can be defined as the work done by each unit of charge (joules per coulomb).
- AVerdadero
- BFalso
8What is the SI unit of resistance?
- ATesla
- BLux
- CAmpere
- DOhm
- EVolt
- FCoulomb
9True or false? The equation connecting current, resistance and potential difference is R = VI.
- AVerdadero
- BFalso
10What is an ohmic conductor?
- AA special type of conductor developed by Georg Ohm
- BAn electrical component whose current and potential difference are directly proportional at a constant resistance and temperature
- CA conductor whose resistance is greater than 100 ohms
11For which electrical component would this current-potential difference graph apply?
- AThermistor
- BLight-dependent resistor
- CFilament bulb
- DDiode
12For which electrical component would this current-potential difference graph apply?
- AThermistor
- BLight-dependent resistor
- CFilament bulb
- DDiode
13True or false? The resistance of a thermistor decreases as temperature increases.
- AVerdadero
- BFalso
14True or false? The resistance of a light-dependent resistor increases as light intensity increases.
- AVerdadero
- BFalso
15True or false? In a series circuit, the same current passes through all components.
- AVerdadero
- BFalso
16True or false? In a series circuit, the potential difference across each component is the same.
- AVerdadero
- BFalso
17If there were two resistors in series, each with a resistance of 0.6Ω, what would be the total resistance?
- A0.6Ω
- B6Ω
- C1.2Ω
- D12Ω
18True or false? In a parallel circuit, the total current is shared through the components.
- AVerdadero
- BFalso
19True or false? In a parallel circuit, the potential difference is shared across the components.
- AVerdadero
- BFalso
20If 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?
- A0.6Ω
- B6Ω
- C1.2Ω
- D12Ω
Información
- Descripción
- Twenty questions on the fourth section of Unit 2 in AQA GCSE Physics: Current electricity.
- Autor
- Matthew T
- Idioma
- English
- Visitas
- 857
- Etiquetas
- Valoración
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