5 Electricity
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by R Bruinier
| 16 Questions
Note from the author:
5 EleCtricity
1
1
A lightbulb uses electrical energy to produce light. This energy can only flow in a closed circuit.
True
False
2
1
Substances that electrical currents can flow through easily are called Insulators.
Substances that electrical currents cannot flow through easily are called conductors.
True
False
3
2
37 kW = ........ W
452 mA = ...... A

4
2
0.008 A = ...... mA
0.3 A = ........ mA

5
1
Caitlin has an ammeter with three measurement ranges: 0-0.05 A, 0-0.5 A and 0-5 A. She wants to measure a current that is somewhere between 60 mA and 100 mA. Which range is best for her to use?
0-0.05 A
0-0.5 A
0-5 A
None
6
1
You have 5 Identical 1.5 V batteries. You have wired all 5 batteries in a series circuit. When you measure the voltage of the circuit you measure 4.5 V. Is this possible?
True
False
7
1
You have 5 Identical 1.5 V batteries. You have wired all 5 batteries in a series circuit. When you measure the voltage of the circuit you measure 4.5 V. How this possible?

8
1
The voltage and the current both refer to the way in which a flow of electricity transports energy. (Multiple answers are correct)
The current tells you how much electrical energy each particle is carrying.
The voltage tells you how much electrical energy each particle is carrying.
The current tells you how many of those particles flow past every second.
The voltage tells you how many of those particles flow past every second
9
2
Draw a series circuit containing:
1 Battery,
3 Lightbulbs.
10
2
Draw a Parallel circuit containing:
1 battery,
3 Lightbulbs
11
1
3 lights are in a parallel circuit. If one lightbulb breaks, the two other will stop giving light.
True
False
12
2
Calculate the current at point B.

13
1
power (W) = voltage
True
False
14
1
Your phone has a capacity of 3000 mAh and runs on a voltage of 4.5 V. How long can your phone run when it has a powerconsumption of 1.35 W?
8 hours
9 hours
10 hours
11 hours
15
1
Your device needs atleast 1,0 V to operate. Which battery will run longer?
Normal battery
Rechargeable NiMh battery, 2700 mAh
Rechargeable hybrid battery, 2100 mAh
16
1
To recharge a mobile, you use an adapter that is plugged into the mains socket. What is one essential component of an adapter?
A battery
A dynamo
A generator
A transformer