A lightbulb uses electrical energy to produce light. This energy can only flow in a closed circuit.
Question 2
2.
Substances that electrical currents can flow through easily are called Insulators.
Substances that electrical currents cannot flow through easily are called conductors.
Question 3
3.
37 kW = ........ W
452 mA = ...... A
Question 4
4.
0.008 A = ...... mA
0.3 A = ........ mA
Question 5
5.
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?
Question 6
6.
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?
Question 7
7.
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?
Question 8
8.
The voltage and the current both refer to the way in which a flow of electricity transports energy. (Multiple answers are correct)
Question 9
9.
Draw a series circuit containing:
1 Battery,
3 Lightbulbs.
Question 10
10.
Draw a Parallel circuit containing:
1 battery,
3 Lightbulbs
Question 11
11.
3 lights are in a parallel circuit. If one lightbulb breaks, the two other will stop giving light.
Question 12
12.
Calculate the current at point B.
Question 13
13.
power (W) = voltage
Question 14
14.
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?
Question 15
15.
Your device needs atleast 1,0 V to operate. Which battery will run longer?
Question 16
16.
To recharge a mobile, you use an adapter that is plugged into the mains socket. What is one essential component of an adapter?