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WorksheetsElectricity 2º ESO
Total questions: 38
Worksheet time: 19mins
Name
Class
Date
1.
An electric circuit is...
a)
A closed path for electric current
b)
A type of generator
c)
An open path for electricity
d)
A machine that produces energy
2.
Which element provides energy to the circuit?
a)
Switch
b)
Generator
c)
Load
d)
Conductor
3.
Which element lets electricity flow through the circuit?
a)
Conductor
b)
Fuse
c)
Load
d)
Switch
4.
Which element transforms electrical energy into light or movement?
a)
Switch
b)
Generator
c)
Conductor
d)
Load
5.
Which of these is a control element?
a)
Light bulb
b)
Switch
c)
Battery
d)
Wire
6.
Which of these is a protection element?
a)
Switch
b)
Motor
c)
Wire
d)
Fuse
7.
Which elements are essential in a circuit?
a)
Generator and load
b)
Load and fuse
c)
Generator and switch
d)
Switch and fuse
8.
Which element is optional in a circuit?
a)
Control element
b)
Generator
c)
Load
d)
Conductor
9.
What type of generator uses chemical energy?
a)
Alternator
b)
Power supply
c)
Battery
d)
Motor
10.
What type of current do alternators produce?
a)
Constant current
b)
Direct current
c)
Stored current
d)
Alternating current
11.
What does a power supply do?
a)
Transforms AC into DC
b)
Stops current
c)
Produces electricity chemically
d)
Stores electricity
12.
Voltage indicates...
a)
The speed of electrons
b)
The energy given to each charge
c)
The resistance of a circuit
d)
The total current
13.
The symbol for voltage is...
a)
Q
b)
R
c)
V
d)
I
14.
The unit of voltage is...
a)
Ohm
b)
Coulomb
c)
Ampere
d)
Volt
15.
Voltage can be calculated as...
a)
V = E / Q
b)
V = R / I
c)
V = I / R
d)
V = Q / E
16.
Which materials allow current to pass easily?
a)
Plastics
b)
Semiconductors
c)
Insulators
d)
Conductors
17.
Which materials do NOT allow current to pass?
a)
Conductors
b)
Metals
c)
Semiconductors
d)
Insulators
18.
Paper and plastic are examples of...
a)
Insulators
b)
Semiconductors
c)
Generators
d)
Conductors
19.
Electric current is...
a)
Electrical resistance
b)
Voltage
c)
Movement of electric charge
d)
Stored energy
20.
Electric current flows only in a...
a)
Closed circuit
b)
Load
c)
Switch
d)
Generator
21.
The symbol for electric current is...
a)
I
b)
R
c)
V
d)
Q
22.
Electric current is measured in...
a)
Amperes
b)
Volts
c)
Ohms
d)
Coulombs
23.
Electric current can be calculated as...
a)
I = Q / t
b)
I = V x R
c)
I = E / Q
d)
I = R / V
24.
Who gives name to the ampere?
a)
Volta
b)
Ampère
c)
Faraday
d)
Ohm
25.
What device is used to measure electric current?
a)
Galvanometer
b)
Motor
c)
Voltmeter
d)
Generator
26.
Electrical resistance is...
a)
The energy of charges
b)
The voltage
c)
The opposition to current
d)
The flow of electrons
27.
The unit of resistance is...
a)
Ampere
b)
Ohm
c)
Watt
d)
Volt
28.
The symbol for resistance is...
a)
V
b)
Q
c)
R
d)
I
29.
Ohm’s law is...
a)
All are correct
b)
I = V / R
c)
R = V / I
d)
V = I · R
30.
If voltage increases and resistance is constant, current...
a)
Stays the same
b)
Stops
c)
Increases
d)
Decreases
31.
In a series circuit, resistors are connected...
a)
In parallel
b)
To different generators
c)
Without wires
d)
One after another
32.
In a series circuit, current is...
a)
Different in each resistor
b)
Zero
c)
The same in all elements
d)
Very high
33.
In a series circuit, voltage is...
a)
Split between resistors
b)
Zero at the end
c)
Only in the generator
d)
The same everywhere
34.
Equivalent resistance in series is...
a)
The smallest resistance
b)
The sum of resistances
c)
The highest resistor
d)
The average resistance
35.
Which symbol represents a light bulb?
a)
Rectangle
b)
Circle with M
c)
Wave
d)
Circle with X
36.
Which symbol represents a motor?
a)
Circle with X
b)
Rectangle
c)
Triangle
d)
Circle with M
37.
Which symbol represents a switch?
a)
Wave
b)
Rectangle
c)
Straight line with gap
d)
Circle with X
38.
Which symbol represents a fuse?
a)
Circle with M
b)
Wave
c)
Zigzag line
d)
Rectangle with line
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