DC Circuits

Question 1

Generator

Answer 1

A device where a wire is passed through a magnetic field

Voltage is produced as long as there is motion between the conductor and the magnetic field

Question 2

Symbol for DC generator

Answer 2

A circle with a G inside of it

Question 3

Symbol for AC generator

Answer 3

A circle with the AC symbol in it

Question 4

Thermocouple

Answer 4

A device that turns heat into electrical energy
Consists of two dissimilar wires wrapped together,
Usually it is copper and either zinc or iron. When heat is applied copper readily gives up its electrons which gives the copper a positive charge and the other wire a negative charge

Question 5

Symbol for photovoltaic cell (solar cell)

Answer 5

a cell with circle around it with two arrows pointing towards it

Question 6

Piezoelectric Effect

Answer 6

When pressure is applied to certain crystalline minerals like quartz, tourmaline, rochelle salts, or barium nitrate creating a current

Question 7

How does the Piezoelectric Effect work

Answer 7

Cyrstals with no pressure have negative and positive charges randomly distributed throughout the mineral but when pressure is applied electrons will go to one side which will create the potential difference

Question 8

Battery

Answer 8

2 or more cells

Question 9

Primary cells

Answer 9

Cells that can not be recharged

Question 10

Secondary cells

Answer 10

Cells that can be recharged

Question 11

Lelanche Cell

Answer 11

Example of a PRIMARY cell. Also called a dry cell. HAs a p