Physics 2.1.1 Flashcards
What is the Function of a Cell/Battery in a Circuit?
Provides the Circuit with a Source of PD. A Battery is 2 or more Cells.
What is the Function of a Switch in a Ciruict?
Turn the Circuit on (Closed), or off (Open).
What is the Function of a Fixed Resistor in a Circuit?
A Resistor Limits the Flow of Current. A Fixed Resistor has a Resistance it cannot change.
What is the Function of a Variable Resistor in a Circuit?
A Resistor that you can change the Resistance of.
What is the Function of a Thermistor in a Circuit?
The Resistance of a Thermistor depends on its Temperature. Inversely Proportional.
What is the Function of a Light-Dependent Resistor in a Circuit?
The Resistance of an LDR depends on the Light Intensity. Inversely Proportional.
What is the Function of a Diode in a Current?
Allows Current to Flow in one Direction only. Convert AC to DC Current.
What is the Function of a Light-Emitting Diode in a Circuit?
A Diode that Emits Light when a Current passes through it.
What is the Function of an Ammeter in a Circuit?
Used to Measure the Current in a Circuit.
How is an Ammeter Connected in a Circuit?
In Series.
What is the Function of a Voltmeter in a Circuit?
To Measure the Potential Difference of an Electrical Component.
How is a Voltmeter Connected in a Circuit?
Parallel.
The Direction of Current Flow is always from ___ to ___.
Positive, Negative.
