WorksheetsSimple circuits
Total questions: 20
Worksheet time: 22mins
Why electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
If lamp 1 is unscrewed from its holder, what will happen to lamp 2?
It will get brighter
It will stay the same brightness
It will go out
Nothing will happen
If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance
12Ω
6Ω
24Ω
0.167Ω
If a circuit has two resistors in parallel both are 4Ω, what is the total resistance of the circuit?
1Ω
2Ω
4Ω
8Ω
What is the unit of resistance
Ohm
Home
Amp
Camp
How to you calculate the total resistance in a series circuit?
R1 + R2+ R3
R1 - R2 - R3
1/R1 + 1/R2 + 1/R3
R1 = R2 = R3
How do you calculate total resistance in a parallel circuit?
R1 + R2 + R3
R1 - R2 - R3
1/R1 +1/R2 + 1/R3 = 1/RT
R1 = R2 = R3
How would the equivalent resistance be determined?
1 / Req = (1/5) + (1/8) + (1/3) Ω
120 Ω
1.5189873 Ω
1 / Req = (1/5) * (1/8) * (1/3) Ω
the formula to find current when the values of V and R are known is
I = V2R
I = V/R
I = R/V
I=VR
