Know For Exam

Question 1

Law of Conservation of charge?

Answer 1

The net charge in an isolated system remains constant during a physical process

Question 2

Current

Answer 2

The rate of flow of charge

Question 3

Potential difference

Answer 3

Potential difference is the energy transferred per unit electric charge flowing through it

Question 4

Resistance

Answer 4

The opposition of the flow of current

Question 5

Why do batteries go flat

Answer 5

Chemical reaction takes place inside the battery which changes chemical potential energy into electrical potential energy
When all chemical potential energy has been transferred to the components of the circuits the battery is no longer able to supply current and therefore it is flat
Flat batteries also have a high internal resistance

Question 6

A series circuit is a ….. divider

Answer 6

Voltage or potential difference divider

Question 7

The … is the same in each resistor in series circuit

Answer 7

Current

Question 8

The … is the same in each resistor in parallel circuit

Answer 8

Pd

Question 9

Parallel circuits are ….. diveders

Answer 9

Current

Question 10

Mole

Answer 10

This is the amount of substance that contains the same number of particles and 12 g of carbon 12

Question 10

Mole

Answer 10

This is the amount of substance that contains the same number of particles and 12 g of carbon 12

Question 11

Relative atomic mass

Answer 11

The mass of a particle on a scale one atom of carbon-12 has a mass of 12

Question 12

Avogadro’s number

Answer 12

The number of particles present in 1 mole

Question 13

Molar mass

Answer 13

The mass of one mole of substance measured in g.mol-¹

Question 14

Molar volume

Answer 14

One mole of any gas occupies 22.4 dm³ at STP

Question 15

Frame of reference

Answer 15

Frame of reference is a coordinate system used to measure and represents properties of objects such as position

Question 16

One-dimensional motion

Answer 16

This is motion along a straight line either backwards or forwards

Question 17

Position

Answer 17

the place where the object is located

Question 18

Distance

Answer 18

The length of the path taken by the object

Question 19

Displacement

Answer 19

The change in position

Question 20

Average speed

Answer 20

The rate of change of distance with time

Question 21

Average velocity

Answer 21

The rate of change of position

Question 22

Acceleration

Answer 22

The rate of change of velocity

Question 23

Positive acceleration

Answer 23

An object moves in a positive Direction with an increase in speed and an object moves in a negative Direction with a decrease in Speed

Question 24

negative acceleration

Answer 24

An object moves in a positive Direction with a decrease in speed and an object moves in a negative Direction with an increase in Speed

Question 25

Deceleration

Answer 25

Deceleration is when an object experiences a decrease in Speed but continues in the same direction

Question 26

Uniform or constant acceleration

Answer 26

This is when the velocity remains constant