Basic Science Solutions for Class 6 Science Chapter 14 Electric Circuits are provided here with simple step-by-step explanations. These solutions for Electric Circuits are extremely popular among Class 6 students for Science Electric Circuits Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Basic Science Book of Class 6 Science Chapter 14 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Basic Science Solutions. All Basic Science Solutions for class Class 6 Science are prepared by experts and are 100% accurate.

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The electric socket is connected to the main power supply which carries a huge amount of energy, and therefore, we get an electric shock. A cell, on the other hand provides less amount of energy, and therefore, we do not get an electric shock.

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Yes, the battery is the basic unit used for producing electricity because it gives energy to the charge carriers to move.

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The bulb, the cell and the wire should be connected in such a way that they form a complete loop.

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The electric circuit is an arrangement that provides a pathway for the flow of electric current. It is a device comprising of  switches, bulbs, wires and an electric cell.

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The switch is a device that is used to either turn on or turn off  the current to an electrical appliance.

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A conductor is a material that allows electric current to pass through it. For example, metals, and the lead of a pencil are conductors.

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Insulators are materials that do not allow electric current to pass through them. Example: glass and rubber.

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A '+' (positive) sign close to one end of a cell and a '–' (negative) sign close to the other end, represents the positive and negative terminal of the cell respectively. The bulged cap at one end of the cell represents the positive terminal and the flat metal base at other end represents the negative terminal.

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A zinc container is present inside the cell and this represents the negative terminal of the cell. It is covered with thick paper or a metal sheet. The significance of this container is that it prevents leakage. The metal cap is fitted with a carbon rod and this is the positive terminal of the cell.



Page No 142:

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We can make a switch with the help of two drawing pins, a small block of wood and a paper clip. The pins represent the two terminals of the switch. We can connect and disconnect them with the help of a paper clip that swings around the pin that holds it.

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To test whether household items conduct electricity or not, we need to make a tester by attaching wires to two rubber clips, that will act as the probes of the tester.
Now, connect these probes to the bulb and battery circuit. If the bulb glows on bringing the probes together, then the connection is correct. Now, place both the probes on a common household object. If the bulb glows, it means that the material is a conductor of electricity, and if it does not glow, then the material is a non-conductor.

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Following are the uses of insulators:
1. Insulators are used in an electric switch to separate the metallic terminals from each other.
2. Electric wires in circuits are insulated by a plastic rubber cover.
3. The tools used by electricians have insulated handles to protect them from electric shocks.
4. Insulators prevent short circuit.

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The bulb will glow only if the wire connecting it and the two terminals forms a complete loop. One terminal of the bulb may be connected to the positive terminal of the battery, and the other to the negative terminal, or vice versa.
In figures (a) and (d), the bulb glows as there is a complete loop. If both the terminals of the bulb are connected to the same terminal of the cell, then the bulb will not glow, as in figure (c). The bulb will also not glow if there is a break in the path of the electric flow, as in figure (b).

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1. False. This is because copper is a cheap and good conductor of electricity.
2. True. This is because current flows from the positive to the negative terminal.
3. True. Switches are made of insulators so that we can protect ourselves from getting an electric shock.
4. False. The positive terminal of one cell should be connected to the negative terminal of the other.
5. True. The human body is a conductor of electricity.

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Device Conductor Insulator Chemicals
Wire    
Bulb holder    
Switch    
Torch    
Cell    
Line tester  

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(c) and (d).
An ordinary cell has both the plastic cap and a zinc can.

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(c) and (d).
The insulation material on the electric wires can be enamel and plastic.

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(a) Bulb.
A filament is used in a bulb.

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(b) This is not the correct way to connect a bulb to a cell.

 

Here both the wires are connected to the same terminal of the cell. Hence, the bulb will not glow in this case.



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