Circuit Diagrams Flashcards
All 4 cards in this deck
How is an ammeter connected in a circuit, and what does it measure?
In series with the component; it measures the current in it, in amps (A).
In the circuit symbol for a cell, which line shows the positive terminal?
The longer, thinner line (the short thick line is negative).
How does the circuit symbol for an LED differ from the symbol for a diode?
The LED has two small arrows pointing away from the diode symbol (showing light emitted).
What are the steps to draw a circuit diagram to measure the resistance of a piece of wire?
e.g. 50 cm of resistance wire with a low voltage power supply
- Power supply (cell/battery) in series with the resistance wire.
- Ammeter in series with the wire.
- Voltmeter in parallel across the wire (or use an ohmmeter across the wire instead of both meters).