Lesson 1

Question 1

During the 18th century, a French Physicist named _______ performed the maiden quantitative investigation of electric forces with the use of a torsion balance which he invented.

Answer 1

Charles Coulomb

Question 2

If we represent electric force by FE and the distance of separation between the two charges by r, we can write the findings by Coulomb in equation for as

Answer 2

FE ∝ 1 / r2

Question 3

If the two charges have the same signs, the force between the two charges is _____

Answer 3

repulsive

Question 4

if the 2 charges are of opposite signs, the force is ______

Answer 4

attractive

Question 5

The MKSA

Answer 5

(meter-kilogram-second-ampere)

Question 6

An _____ is defined as any region in space where a positive test charge placed at any point within the region experiences a force which is electric in nature.

Answer 6

electric field

Question 7

​A ____ is a device used to temporarily store electric charges.

Answer 7

capacitor

Question 8

​_____ is defined as the ratio of the magnitude of the charge on either plate to the potential difference between them or C = Q/ V = coulombs / volt or farad or 1 F = 1 C/V.

Answer 8

Capacitance

Question 9

capacitors are also called

Answer 9

condensers

Question 10

insulating material or a very poor conductor of electric current

Answer 10

dielectric

Question 11

The SI unit of capacitance , the farad , is named after.

Answer 11

Michael Faraday

Question 12

is a property that causes matter to experience a force when placed in an electormagnetic field.

Answer 12

Electric charge

Question 13

positive charges

Answer 13

proton

Question 14

negative charges

Answer 14

electron

Question 15

The 1st electroscope was invented by in 1780. An electroscope is a simple device that can detect the presence of electric charges. I

Answer 15

Abraham Bennet

Question 16

simple device that can detect the presence of electric charges.

Answer 16

electroscope

Question 17

are materials that allow the flow of electric current.

Answer 17

Conductors

Question 18

prevent charges from flowing from one conductor to another

Answer 18

Insulators

Question 19

, a simple electrostatic generator invented by Alessandro Volta

Answer 19

electrosphorus

Question 20

electric charges can be generated using two main types of electrostatic generator

Answer 20

electrophorus, the Van de Graaf Generator.

Question 21

is defined to be the rate at which charge flows.

Answer 21

Electric current

Question 22

is an electronic component used to provide a specific amount of resistance.

Answer 22

resistor

Question 23

uses branches toa llow current pass through more than one path, unlike in the series circuit.

Answer 23

Parallel Circuit