Voltage Flashcards
Potential difference will exist between two points in a circuit that have a?
Difference in charge
Potential difference is measured in?
Volts (V)
What is the name of the force that drives the current through a circuit?
EMF (electromotive force)
Name 6 methods by which voltage can be produced
Light
Friction
Chemical
Induction
Pressure
Heat
To produce a voltage chemically, the two metal plates need to be made of?
Dissimilar metals
Examples of voltage produced by friction
Sticking balloon to the wall
Family guy with his nylon onesie
Requirements needed to produce a voltage by induction
Electrical conductor
Magnetic field
Relative movement
What determines the polarity of an induced voltage?
Direction of movement between magnetic field and conductor
What determines the amount of voltage produced by a thermocouple?
Two types of material used
Difference in temperature
What material is used in a solar panel?
Semiconductors
What is used in chemical reaction?
Negative plate
Positive plate
Electrolyte
What is EMF?
Electromotive force
Force that drive the current around a circuit
How does pressure produce voltage?
Page 2.8 in book 👍🏻
How does heat produce voltage?
If two wires of different metals are welded or wound together at both ends and the two junctions are brought to different temperatures, and electrical potential is produced between them.
How does light produce voltage?
Uses semiconductors which has their electrical charge changed when exposed to light
