Current, Voltage And Resistance

Question 0

What is the unit of measurement of charge and it’s symbol?

Answer 0

Coulomb; C

Question 1

What is the symbol for electrical charge?

Answer 1

Q

Question 2

What is the number of electrons for one unit of charge?

Answer 2

6.28 x 10^18

Question 3

Describe static electricity

Answer 3

The buildup of charging an isolated object

Question 4

Define electric current

Answer 4

The flow of charge

Question 5

What is the symbol for electric current

Answer 5

I

Question 6

What is the unit of measurement for electric current and at symbol?

Answer 6

Ampere; A

Question 7

Describe conventional current flow?

Answer 7

Current flow from positive to negative

Question 8

Define voltage

Answer 8

The potential energy difference between two points

Question 9

What is the name of force that maintains a voltage?

Answer 9

Electromotive force

Question 10

State an abbreviation for electromotive force.

Answer 10

emf

Question 11

State the unit of measurement for voltage and it’s symbol

Answer 11

Volt; V

Question 12

State the symbol used to represent source voltage

Answer 12

E

Question 13

State the symbol used to represent voltage drop

Answer 13

V

Question 14

List six methods of producing an electromotive force

Answer 14

1. Magnetic
2. Chemical
3. Friction
4. Heat
5. Pressure
6. Light

Question 15

Define resistance

Answer 15

Resistance is the property of the material that opposes the flow of an electric current

Question 16

Using Ohm’s law, what happens to current when the voltage is increased and the resistance is held constant

Answer 16

The current increases

Question 17

Using Ohm’s law, what happens to current when the resistance is increased and the voltage is held constant

Answer 17

The current decreases

Question 18

The flow of electrons from one point to another is caused by

Answer 18

A difference in charge between two points

Question 19

An electric field is a force that exists between _____ charges

Answer 19

Different; opposite

Question 20

When a potential difference exists across an open portion of a circuit, a

Answer 20

Current will not flow

Question 21

The unit of measurement for an electric current is

Answer 21

Ampere

Question 22

According to a fundamental law of electricity the current in a DC circuit is

Answer 22

Directly proportional to the voltage

Question 23

The symbol used to represent resistance is

Answer 23

R

Question 24

The circuit property that opposes a flow of current within a circuit is called

Answer 24

Resistance

Question 25

The symbol used to represent the unit of measurement for potential difference across a resistive load is

Answer 25

V

Question 26

The type of electricity produced by rubbing together to materials is called

Answer 26

Static

Question 27

A generator is a device that uses the magnetic principle to produce electricity. True or false

Answer 27

True

Question 28

A coulomb is the measure of a certain number of

Answer 28

Electrons

Question 29

A device that has the ability to maintain a difference in potential between two points of an electric circuit is said to develop a/an:

Answer 29

Electromotive force