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Chapter: 6th Science : Term 2 Unit 2 : Electricity

Scientist for the People, Points to remember

6th Science : Term 2 Unit 2 : Electricity :

Scientist for the People



Points to remember

* Any device from which electricity is produced, is called the source of electricity.

* There are many sources of electricity such as thermal power stations, hydel electric power stations, wind mills, atomic power station etc.

* Device that converts chemical energy into electrical energy is called a cell.

* Electric cells are of two types depending on the continuity of flow of electric current.

* Primary cell is a cell that is designed to be used once and discarded.

* A cell that can be recharged many times is called secondary cell.

* Two or more cells combined together to make a battery.

* An electric circuit is a combination of cells, key, bulb and connecting wires arranged in proper manner.

* A circuit consisting of a cell, key, bulb and connecting wires is called a simple circuit

* If two or more bulbs are connected in series in a circuit, then that type of circuit is called series circuit.

* If two or more bulbs are connected in series in a circuit, then that type of circuit is called series circuit.

* Symbols of electrical components are used to represent complicated circuits in simple way.

* The materials which allow electric charges to pass through them are called conductors.

* The materials which do not allow electric charges to pass through them are called insulators or non-conductors. 

 

ICT Corner

Electricity

Through this activity you will be able to form a simple circuit.


Step 1: Use the given URL in the browser. ‘Simple Circuit will open.

Step 2: In right side of the activity window there are diagrams of some wires and in the left side diagrams of a battery, switch and a bulb are given.

Step 3: By using the mouse drag and drop the wires to the battery and switch to make connections. Click on the switch, if the circuit is formed correctly the bulb will glow.

Step 4: Use the second URL to try Series and parallel circuits.


Simple Circuit’s URL:

http://www.physics-chemistry-interactive-flash-animation.com/ electricity_electromagnetism_interactive/simple_circuit.htm

Series and parallel circuits url http://www.physics-chemistry-interactive-flash-animation.com/ electricity_electromagnetism_interactive/components_circuits_ association-series_parallel.htm

*Pictures are indicative only

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