Physics 5.6 - 5.10

Question 1

What is static electricity

Answer 1

Static electricity is the build up of charge on an insulating material

Question 2

How is static electricity discharged

Answer 2

Static electricity is discharged when electrons jump from a charged material to a grounded or earthed object

Question 3

How is static electricity gained?

Answer 3

When two objects are rubbed together, the friction causes electrons to jump from one object to the other leaving one positively charged and the other negatively charged

Question 4

Do protons jump onto other materials once rubbed together? (Yes, no)

Answer 4

No

Question 5

Is it possible for two conducting materials to develop static electricity and why?

Answer 5

It isn’t possible because the electrons would flow back as they both would lose electrons

Question 6

What are series circuits

Answer 6

Series circuits are circuits that consist of one loop and each component is placed after the other

Question 7

Name one disadvantage of a series circuit

Answer 7

If a component breaks, it stops the flow of current to the other parts of the circuit

Question 8

How do we place a volt meter in order to measure the voltage of that component?

Answer 8

We place the voltmeter in parallel to the component

Question 9

How do we find out the total voltage in a series circuit?

Answer 9

The total voltage is just the addition of each individual voltage that each component has:
v total = v1+v2…..

Question 10

How do we find out the total resistance in a series circuit?

Answer 10

The total resistance is just the addition of the resistances of each component
ResistanceT = r1+r2….

Question 11

How do we find out the total current in a series circuit?

Answer 11

The current in a series circuit is the same everywhere

Question 12

How do we place an ammeter in a series circuit?

Answer 12

We place the ammeter in series with the other components, It can be placed anywhere in the circuit

Question 13

In a series circuit, components with a greater resistance will have a ____ share of the voltage (greater, less) and explain why

Answer 13

Greater: voltage is basically the force pushing the electrons in the circuit. You will require more force (more voltage) to push electrons through a component with a higher resistance

Question 14

What is a parallel circuit

Answer 14

A parallel circuit is a circuit with more than one loop or a combination of a bunch of series circuits

Question 15

What is the measure of the total voltage in a parallel circuit

Answer 15

The total voltage in a parallel circuit is the same everywhere because electrons flow to each loop like they’re their own circuits like in a series circuit

Question 16

What is the measure of the total current in a parallel circuit

Answer 16

The total current in a circuit is the sum of all the currents in the circuit

Question 17

What is the measure of the total resistance in a parallel circuit?, Provide the formula and explain your answer

Answer 17

The resistance in a parallel circuit actually decreases when more parallel circuits are connected. This provides more paths for electrons to flow thus reducing the resistance the electrons experience. the formula is: 1/rt = 1/r1 + 1/r2 … where rt is resistance total and r is resistance

Question 18

Name one advantage of parallel circuits

Answer 18

If a component breaks in a parallel circuit, the entire circuit won’t fail and continue providing current to the other available pathways

Question 19

Name the three formulas for energy

Answer 19

Energy = Power * Time
Energy = Voltage * Current * Time
Energy = Charge * Voltage

Question 20

Name the 2 formulas for power

Answer 20

P = IV
P = I^2R

Question 21

Name the 3 wires present in uk wiring

Answer 21

Live, ground or earth, and neutral