Worksheet: Electricity Projects - 2 | DIY Science Fun: Cool School Projects - Class 6 PDF Download

Fill in the Blanks

Q1: DC motors can generate electricity when their __________ are set in motion.

Q2: Increasing the rotation speed of the motor's shaft can __________ the voltage produced.

Q3: The components needed for the electric generator project include DC motors, power source, small white switch, LED, resistor, and __________.

Q4: __________ is an essential electrical device that allows or interrupts the flow of electricity in a circuit.

Q5: __________ is converted into mechanical energy in a DC motor.

Multiple Choice Questions

Q1: Which type of energy is generated by DC motors?
(a) Mechanical energy
(b) Thermal energy
(c) Chemical energy
(d) Nuclear energy

Q2: What purpose does the resistor serve in the LED circuit of the electric generator project?
(a) To increase voltage
(b) To protect the LED
(c) To decrease current
(d) To increase brightness

Q3: In the electric generator project, what connects the shafts of the two DC motors?
(a) Switch
(b) Jumper wires
(c) Pulley
(d) LED

Q4: The flow of electricity in an electric circuit can be controlled using a __________.
(a) Resistor
(b) Diode
(c) Transistor
(d) Switch

Q5: What is the function of a DC motor in an electric generator project?
(a) To produce light
(b) To generate electricity
(c) To provide mechanical power
(d) To regulate current flow

True and False

Q1: True/False: DC motors can convert electrical energy into mechanical energy.

Q2: True/False: The rotation speed of a DC motor's shaft has no effect on the voltage generated.

Q3: True/False: A resistor is used to protect the LED from excessive current in the electric generator project.

Q4: True/False: The LED holder in the project can be made from an old torchlight's LED holder.

Q5: True/False: Electric circuits are essential for understanding the applications of DC motors.

Short Answer Questions

Q1: Describe how a DC motor can generate electricity when its shaft is rotated.

Q2: Explain the role of a switch in an electric circuit.

Q3: What are the key components needed to construct an electric generator using DC motors?

Q4: How does a resistor protect the LED in the electric generator project?

Q5: Mention two safety precautions to consider while working on a science project involving DC motors.

You can access the solutions to this worksheet here.