Electricity

Question 1

How do you charge insulators

Answer 1

Friction

Question 2

Objects gaining electrons

Answer 2

Become negatively charged

Question 3

Object losing electrons

Answer 3

Becomes positively charged

Question 4

Uses of electrostatics

Answer 4

Painting

Dust extraction

Question 5

Current equ

Answer 5

Charge / time

Question 6

Use of voltmeter and ammeter

Answer 6

Volt - p.d

Ammeter - current

Question 7

Resistance equ

Answer 7

V/ current

Question 8

V- I graphs

Answer 8

Fixed resistor
Straight
X=y

Filament lamp
S shaped

Question 9

Parallel current and voltage rules

Answer 9

Total circuit current = the individual current added up
Voltage = same each component

Voltage voltmeter MUST BE CONNECTED IN PARALLEL with the component.

Question 10

Series rules voltage and current

Answer 10

Current is the same through each

Voltage is the sum of the individual drops

Question 11

Equation in voltage

Answer 11

Energy / charge

Question 12

Power

Answer 12

Current x voltage

Question 13

Energy transfer

Answer 13

Power x time

Question 14

Consequence of 100% efficiency

Answer 14

Total transfer of electrical power
Gives ride to
VpIp = VsIs

Question 15

When do electromagnetic induction occur

Answer 15

A wire moves relative to a magnet or when a magnetic field changes

Question 16

What is a generator

Answer 16

Coil rotating in a magnetic field