Combined Physics - P2 Electricity Flashcards
What is the circuit symbol for an open switch?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/961/a_image_thumb.png?1599507820)
What is the circuit symbol for a closed switch?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/962/a_image_thumb.png?1599507837)
What is the circuit symbol for a cell?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/963/a_image_thumb.png?1599507857)
What is the circuit symbol for a battery?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/964/a_image_thumb.png?1599507880)
What is the circuit symbol for a diode?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/965/a_image_thumb.png?1599507906)
What is the circuit symbol for a resistor?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/966/a_image_thumb.png?1599507925)
What is the circuit symbol for a variable resistor?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/967/a_image_thumb.png?1599504363)
What is the circuit symbol for an LED?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/968/a_image_thumb.png?1599507947)
What is the circuit symbol for a lamp?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/969/a_image_thumb.png?1599507971)
What is the circuit symbol for a fuse?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/970/a_image_thumb.png?1599507996)
What is the circuit symbol for a voltmeter?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/971/a_image_thumb.png?1599504418)
What is the circuit symbol for an ammeter?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/972/a_image_thumb.png?1599508226)
What is the circuit symbol for a thermistor?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/973/a_image_thumb.png?1599509460)
What is the circuit symbol for an LDR?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/974/a_image_thumb.png?1599509486)
What is current?
The rate of flow of charge
What equation links charge flow, current and time?
Charge flow = current x time
Q = I t
Describe the IV graph for a resistor at constant temperature.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/977/q_image_thumb.png?1599491103)
- Current is directly proportional to potential difference.
- Resistance is constant.
What type of circuit is shown in the image?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/978/q_image_thumb.png?1599491510)
Series circuit
Explain the shape of the IV graph for a diode.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/979/q_image_thumb.png?1599492114)
- Current only flows in one direction through a diode.
- There is high resistance in the opposite direction meaning current doesn’t flow.
What equation links potential difference, current and resistance?
Potential difference = current x resistance
V = I R
What type of circuit is shown in the image?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/981/q_image_thumb.gif?1599492384)
Parallel circuit
Draw an I-V graph for a filament lamp.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/982/a_image_thumb.png?1599492442)
For a given potential difference, what happens to the current when the resistance increases?
The current decreases.
Explain the shape of the IV graph for a filament lamp.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/984/q_image_thumb.png?1599492513)
As the current increases the temperature of the filament lamp increases (so the resistance increases) meaning less current can flow per unit potential difference.
Draw an I-V graph for an ohmic resistor (e.g. a resistor at a constant temperature).
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/985/a_image_thumb.png?1599492598)
Draw an I-V graph for a diode.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/320/316/986/a_image_thumb.png?1599492652)