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WorksheetsElectricity 3ºESO
Total questions: 23
Worksheet time: 10mins
What is an electric current?
Is the set of elements connected to allow electrons to move.
Is the flow or movement of electrons in a circuit
Is the difference between the voltage and the resistance.
What component provide the energy for the electrons to move?
generator
resistor
motor
RESISTORS transfor the electric energy into ...
motion
heat
voltage
VOLTAGE is related to ...
the energy that the electrons need to move
the number of electrons that move in a circuit
the number of electrons that pass through a resistor
INTENSITY OF THE CURRENT is related to ...
the energy that the electrons need to move
the number of electrons per second that move in a circuit
the number of electrons that pass through a point in a circut
According to the Ohm's Law, RESISTANCE is equal to ...
Voltage divided by Intensity
Voltage multiplied by Intensity
Intensity divided by Voltage
VOLTAGE is measured in ...
volts
Amps
Ohms
watts
INTENSITY is measured in ...
volts
Amps
Ohms
watts
RESISTANCE is measured in ...
volts
Amps
Ohms
watts
POWER is measured in ...
volts
Amps
Ohms
watts
A motor is connected to a 50V voltage and has a Power of 100W. Calculate the Intensity that passes through it.
I = 2A
I = 5000 A
I = 150 Ohmios
I = 2 Ohmios
What is the energy in KWh consumed by a 1500W device when working for a day?
E = 36 KWh
E = 1,5 KWh
E = 36000 KWh
Another result
In a circuit with 2 resistors (4 and 5 Ohms) in series, connected to a 9V battery, calculate the Intensity in each of them.
I1= 1A;
I2= 1A;
I1= 9/4 Amps
I2= 9/5 Amps
Another result.
In a SERIES circuit:
If one receptor breaks, the others are not affected and continue working normally.
If one recertor breaks, the others stop working.
In a PARALLEL circuit:
If one recertor breaks, the others are not affected and continue working normally.
If one recertor breaks, the others stop working.
In a fluorescent tube, the metallic filament is made of ...
Tungsten
Copper
Phosphor
Mercury
In a fluorescent tube, who creates invisible UV light?
Tungsten
Copper
Phosphor
Mercury
In a fluorescent tube, who emits visible light?
Tungsten
Copper
Phosphor
Mercury
The Joule effect is related to ...
the light emitted by an electric bulb
the heat produced by an electric current
the light produced by a fluorescent tube
When we have an electric current in a conductor, a ............. is created around it.
voltage
magnetic field
sound
light
What control element would you use in a doorbell?
Switch
N.O. (Normally open) Push button
N.C. (Normally closed) Push button
3-way switch
In the circuit to control the activation of one bulb from 2 different places (like in a bedroom) we use ...
Two Switches
Two 3-way switches
One switch and a cross-point switch
Two cross-point switches
The circuit on the left can be used to ...
Control the activation of the motor
Reverse the rotational direction in the motor
Make the motor rotate in different velocities
