Grade 6-Electricity for a Comfortable Life-2

The accessories used in electronic circuits are called ..............................

• electronic appliances

• electronic equipments

• Diodes

• Resistors

Select the false statement.

• The main function of a diode is to let the current flow in one direction only

• 
• The image shows a LDR

• The diode’s positive terminal must be connected to the positive terminal of the dry cell and the negative terminal to the negative terminal of the dry cell.

Select the correct statements

• The diagram shows a Light emittng diodes

• 
• LED is also a type of a diode.

• The longer terminal is the negative terminal of the diode and the shorter one is the positive terminal.

Select the correct statements

• The diagram shows a Resistor

• It is a barrier to the flow of current.

• There is a positive and negative terminal of this accessory.

• 

The barrier to the flow of current is named as electric resistance.

The unit used to measure resistance is ..............

When light falls on the LDR,

• the resistance of it reduces.

• the resistance of it increases.

The diagram shows a,

• LED

• Resistor

• LDR

• Diode

The consumption of electricity is increasing day by day. At present, the generated electricity is not sufficient. Therefore, there is an energy crisis in the world.

The highest usage of electricity is from ...............................................

• 7.00 a.m. to 8.00 p.m.

• 5.00 p.m. to 9.00 p.m.

• 6.00 p.m. to 10.00 p.m.

• 7.00 p.m. to 9.00 p.m.

It's time to use electricity economically. Select the correct ways of conserving electricity.

• Use efficient bulbs.

• Switch off the appliances when they are not in use.

• Do not increase the sound of televisions and radios unnecessarily.

• Place the refrigerator in a place with light

• By ironing many clothes at once than ironing one at a time, we can minimize the wastage of electricity

Select the incorrect way of preventing of accidents cause by electricity

• Do not fix antennas near current wires

• Connect several several electric appliances to one socket.

• Do not touch electric circuits & appliances with wet hand

• Disconnect the main switch in your house during flood.