Circuit Diagrams Flashcards
All 6 cards in this deck
How are the symbols for a cell and for a battery drawn in a circuit diagram?
Cell: one long thin line (positive terminal) and one short thick line (negative terminal). Battery: two or more cell symbols in a line.
What circuit symbols are used for an ammeter and for a voltmeter?
Ammeter: a circle containing the letter A. Voltmeter: a circle containing the letter V.
How is the symbol for a variable resistor drawn?
A rectangle (resistor) with a diagonal arrow drawn through it.
How is the symbol for a diode drawn, and how does the LED symbol differ from it?
Diode: a triangle pointing at a straight line (bar), in the direction of conventional current. LED: the same symbol with two arrows pointing away from it.
How are the symbols for a thermistor and an LDR drawn?
Thermistor: a resistor rectangle with a line across it bent up at one end. LDR: a resistor rectangle in a circle with two arrows pointing in towards it.
What are the steps to draw a circuit diagram to measure the current in and the potential difference across a resistor?
e.g. one cell and one resistor
- Draw a closed loop: cell, then the resistor.
- Put an ammeter in series in the loop.
- Put a voltmeter in parallel, connected across the resistor.