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WorksheetsSTEAM 4º ESO - TEST 1 - Electricity
Total questions: 20
Worksheet time: 24mins
The opposition to the flow of electrons is the...
Voltage
Resistance
Current
Intensity
The amount of electrons is the...
Voltage
Resistance
Current
Volts
What is a synonim of Intensity?
Voltage
Current
Resistance
What is the variable that reflects the transfer of energy between two points?
Voltage
Resistance
Current
Intensity
The electrons flow from the positive pole to the negative
TRUE
FALSE
Which one is NOT correct?
V = I x R
R = I / V
R = V / I
I = V / R
The wood is a material...
Conductor
Semiconductor
Insulator
Which one is NOT a significant factor to determine a component resistance
Thinckness
Section
Length
Location
Material
Does it flow in the same direction the convencional current convention and the electrons?
YES
Depends on the circuit
NO
Why does a light bulb light up?
Because it is a resistor
Because electricity heats a filament
Because it emits energy in the form of light
All are correct
No one is correct
Direct current is the best way to transfer electricity over long distances
TRUE
TRUE, but only for small devices
FALSE
Batteries are a perfect example of...
Direct current (DC)
Alternative current (AC)
We can transfor direct current into alternative current easily and vice versa
TRUE
FALSE, only is easy direct to alternative current
FALSE, only is easy alternative to direct current
FALSE, is NOT easy any transformation
My mobile phone is an example of ... current
...direct...
...alternative...
Is it possible to change the polarity and the electrons circulation?
Yes, it is called Alternative current
Yes, it is called Direct current
No
An electromagnet is an example of...
Electric generator
Electric conductor
Control element
Electric receiver
Protective element
An conmutator is an example of...
Electric generator
Electric conductor
Control element
Electric receiver
Protective element
To control the exceed of current, we will need a...
Electric generator
Electric conductor
Control element
Electric receiver
Protective element
Calculate the resistance of the light bulb
12 Ω
3 Ω
8 Ω
4 Ω
Calculate the current in the point A:
12 A
3 A
8 A
4 A
