CBSE class 7 Tinkercad solved exercise

1.	Fill in the blanks.
	a.	tests the working of the circuits and components.
	Ans	simulation
	b.	The is used to assemble and connect various components of a circuit.
	Ans	breadboard
	c.	In an LED, the positive end is called the and the negative end is called the .
	Ans	anode, cathode
	d.	A is used to restrict the flow of current to electrical components in a circuit..
	Ans	resistor
	e.	To zoom in on any component in Tinkercad, we must hold the Control key and press the key.
	Ans	plus
2.	Label the following.
	a.	Anode and Cathode in an LED
	Ans.

	b.	Different parts of a breadboard
	Ans.
3.	Answer the following questions
	a.	Explain the use of the ‘Transparent’ option in Tinkercad.
	Ans.	The Transparent option is used to hide the visibility of the selected object from the workspace.
	b.	Observe the windmill created in Tinkercad and answer the questions given below.
		i.	Which component of the Tinkercad window contains the paraboloid shape?
		Ans.	Basic Shapes
		ii.	Which circuit assembly should be used to move the fans of a windmill?
		Ans.	Spin circuit assembly
		iii.	Which option is used to cut the top of the Paraboloid and get the image as shown?
		Ans	Hole

Explain the following components used in an electronic circuit.

· Breadboard

· LED

· Resistor

Ans.

· It is a piece of plastic that has several holes to hold different

electronic components of a circuit.

· It is an electronic device that emits light when an electric

current passes through it.

· It is used to restrict the flow of current to electrical components.

What are circuit assemblies? Explain with the help of glow circuit assembly.

Ans.

· Circuit assemblies are simple, pre-made circuits that can be incorporated into 3D designs.

· A glow circuit assembly combines a light emitting diode (LED) and a coin cell battery to light up a 3D design.

· The two shapes required to design a glowing circuit are: Glow holder

Glow cutout

List the electronic components used in a spin circuit assembly.

Ans.

· 3D printed holder

· Gear motor and

· 2 AAA batteries

Observe the circuit given below. What has happened to the LED? Give reasons for your answer.

ans.

· The LED light will show a star over it.

· It indicates that the LED blew out.

· The LED blew because it received too much voltage than it requires. In the physical world, it would mean that our LED

is no longer good and needs to be replaced.

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