Electricity for a comfortable life

What is not an electric appliance

• Bulb

• Resistors

• Dry cells

• Switch

The diagram shown in this diagram is

• LED

• Variable resistor

• LDR

• Diode

Function of the Galvanometer is

• To check the amount of current

• To identify the direction of the current

• To measure the potential differnce

• To check the amount of resistance

What is not a method of generating of current?

• By rotation

• By chemical reactions

• By solar power

• By rubbing

What is the observation of this practical?

• The galvanometer needle deflected when the magnet is inside the coil

• The galvanometer needle deflected when the magnet is outside the coil

• Galvanometer needle deflected when the magnet is moved towards the coil

• Galvanometer needle does not deflect when the magnet is brought towards the coil.

Coal Power plant station is found at

• Kelanitissa

• Hambantota

• Noraicholei

• Rantambe

Unit to measure the resistance is

• Ohm

• Ampere

• Meter

• Centimeter

To let the current flow in only one direction is the function of a

• LED

• LDR

• Resistor

• Diode

When lights fall on a LDR

• The current is reduced

• Resistance is incresed

• Resistance is decreased

• Current flow is interrupted

What could be a good startegy to conserve the electricity?

• To use normal bulbs

• To use CRT monitor TVs

• Keeping warm food inside the fridge

• Keeping the refrigerator on a flat surface