physics 3

Question 1

Conductors

Answer 1

charges (electrons) can move from atoms to atom in an electrical conductor (e.g. copper).

Question 2

insulators

Answer 2

Materials that don’t have disability or describe as electrical insulators

Question 3

current

Answer 3

when all the free moving charges are made to moving in the same direction and electrical current is formed.
Circuit, including a power power supply of battery /cell is required for current to flow

Question 5

components

Answer 5

electrical components found in circuits can be identified in the diagram from the coded symbols

Question 6

Series circuit

Answer 6

Circuits where the current (flowing charges) can only follow one path are described as Seriescircuits

Question 7

parallel circuit

Answer 7

Circuit which branch and allow more than one path to be followed by current artist described as parallel circuits

Question 8

potential difference

Answer 8

potential difference provides the energy required for the current flow and is measured in volts (v)

Question 9

Resistance

Answer 9

resistance is a measure of how difficult it is for current to flow and is measured in ohms
The relationship between current, potential (voltage) and resistance is described as:
Potential difference = current X
resistance mathematically
for a fixed resistor the current flowing is proportional to the potential difference

Question 10

Static electricity

Answer 10

objects can become charged with static electricity through the action of friction

Question 11

Transferring charge

Answer 11

Fraction can transfer charges (electrons) from or two objects

Question 12

Charged

Answer 12

if an object loses electrons, it becomes positively charged if it gains electrons it becomes negatively charged

Question 13

repulsion and attraction

Answer 13

objects are the same charge repel each other, whereas objective opposite charge or attracted to each other