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WorksheetsG8 STEM Q2 Lesson Recap
Total questions: 25
Worksheet time: 6hrs 15mins
Name
Class
Date
1.
Ohm’s law is expressed as _____________.
a)
a. V=IR
b)
b. V=CR
c)
c. V=AO
d)
d. None of above
2.
Two resistors are in series when they ________________.
a)
a. are connected one after another
b)
b. are connected to the same point (also called a node)
c)
c. both a and b
d)
d. none of the above
3.
Which leg of the LED must be connected to the red wire of the battery? Look at the picture
a)
a. Anode
b)
b. Cathode
c)
c. Any leg is ok
d)
d. None of the above
4.
What type of circuit connection is in the picture?
a)
a. Series
b)
b. Parallel
c)
c. Series – Parallel
d)
d. None of the above
5.
Using two resistors in series connection, you can increase the value of the resistance, hence decreasing the flow of current. Hence, the LED glows _______.
a)
a. Less
b)
b. Brighter
c)
c. LED will not light up
d)
d. None of the above
6.
It is created by the movement of electrons or charge.
a)
a. voltage
b)
b. current/electric energy/electricity
c)
c. resistance
d)
d. none of the above
7.
The force that a power source creates at its two ends. This force makes the charge flow around the circuit.
a)
a. voltage
b)
b. current
c)
c. resistance
d)
d. none of the above
8.
It is always connected across the component (example, LED or resistor) whose voltage we are measuring.
a)
a. voltmeter or multimeter
b)
b. current
c)
c. resistance
d)
d. none of the above
9.
It is an electrical component or portion of a circuit that consumes electric power.
a)
a. Load/electric load
b)
b. power source
c)
c. conductor
d)
d. none of the above
10.
Resistance is measured in ____________.
a)
a. Amp
b)
b. Volts
c)
c. Ohms
d)
d. none of the above
11.
A complete circular path that electricity flows through is called ______________.
a)
a. Circuit
b)
b. Component
c)
c. Conductor
d)
d. None of the above
12.
The more the resistance, the slower the flow of charge i.e. lesser the current.
a)
True
b)
False
13.
Charges move through a material, and that is why we get electricity. But not all materials allow this free flow of charge.
a)
True
b)
False
14.
It is practical and can save time to create or build something right away without planning.
a)
True
b)
False
15.
When both points (+ and –) of voltage source in a circuit gets joint with each other for some reason then it is called OPEN circuit.
a)
True
b)
False
16.
In electronics with constant voltage, and less resistance, there will be less the current.
a)
True
b)
False
17.
If 2 resistors and 2 LED are connected in series, but one of the LEDs is broken. Then you switched on the battery, the other LED will still light up.
a)
True
b)
False
18.
The LED from this connection will light up.
a)
True
b)
False
19.
Using two resistors and 1 LED in parallel in a parallel circuit connection will make you can the LED glow more.
a)
True
b)
False
20.
A breadboard is used for building temporary circuits.
a)
True
b)
False
21.
Resistor has no polarity thus you can connect any legs to the battery source.
a)
True
b)
False
22.
What is the current in a 160V circuit if the resistance is 2Ω?
(a)
23.
A walkman uses four standard 1.5 V batteries. How much resistance is in the circuit if it uses a current of 0.02A?
(a)
24.
What voltage is required to move 6A through 10Ω?
(a)
25.
An alarm clock draws 0.7 A of current when connected to a 120 volt circuit. Calculate its resistance.
(a)
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