190104a Electrical Theory

Question 1

Voltage can be described as a ____ that causes electrons to flow

Answer 1

Pressure or force

Question 2

How many volts are in a fully charged lead-acid battery

Answer 2

12.6V

Question 3

Current can be described as

Answer 3

the amount of electron flow

Question 4

Resistance can be described as

Answer 4

the opposition to the flow of electrons

Question 5

resistance change is proportional to change in ______

Answer 5

length

Question 6

resistance decreases as cross sectional area____

Answer 6

increases

Question 7

how is voltage produced with electromagnetic induction?

Answer 7

conductor moves 90 degrees to a magnetic field. excess electrons at one end and shortage of electrons at the other end.

Question 8

4 factors of resistance

Answer 8

Temperature, cross sectional area, length, material

Question 9

If the resistance of material increases as temp increases, the material is said to have a

Answer 9

positive temp coefficient of resistance

Question 10

if the resistance of a material decreases as temp ruses, the material is said to have a

Answer 10

negative temp coefficient of resistance

Question 11

the vast majority of equipment temp sensors are positive or negative temp coefficient thermistors?

Answer 11

Negative

Question 12

Voltage and resistance determine the amount of?

Answer 12

current flow

Question 13

if voltage increases, current flow will?

Answer 13

increase

Question 14

if resistance increases, current flow will?

Answer 14

decrease