P2 Flashcards
What does a switch look like?
Line. Circle. Line. Circle. Line.
What does a cell look like?
Line. Big vertical line. Gap. Small vertical line. Line.
What does a battery look like?
Line. Big vertical line. Gap. Small vertical line. (repeat) Line.
What does a lamp look like?
Line. Circle with an X in it. Line.
What does a fuse look like?
Line. Rectangle with line in it. Line.
What does a voltmeter look like?
Line. Circle with a V. Line.
What does an ammeter look like?
Line. Circle with an A. Line.
What does a diode look like?
Line. Circle with a skip symbol with a line through it. Line.
What does a thermistor look like?
Line. Rectangle with golf club in it. Line.
What does a resistor look like?
Line. Rectangle. Line.
What does a variable resistor look like?
Line. Rectangle with an arrow going from bottom left to top right. Line.
What does an LDR look like?
Line. Circle with a rectangle inside with 2 arrows outside pointing towards circle. Line.
What does an LED look like?
Line. Circle with a skip button and 2 arrows in right hand corner pointing away. Line.
What is current?
Flow of electrical charge.
What is the unit for current?
Amps (A)
What is needed for a current to flow?
A closed circuit with a potential difference.
What is potential difference?
Driving force that pushes the charge around the circuit.
Name the names and units for Q =I t
Charge in Coulombs. Current in Amps. Time in seconds.
Does the current change in different places in a circuit?
No. A current has the same value at any point in a single closed loop.
What is resistance?
Opposes the flow of charge.
The greater the resistance…
…the smaller the current that flows
Name the names and units for V =I R
Potential difference in Volts. Current in Amps. Resistance in ohms.
How do you connect the ammeter?
In series (normal).
How do you connect the voltmeter?
In parallel (in branches).