or

Differentiate between.

  1. Live wire and the neutral wire
  2. AC and DC
  3. Filament and fluorescent lamp
  4. Dynamo and electric motor
  5. Step up and step down transformer
  6. Tungsten and nichrome
  7. Electricity obtained from generator and battery

a. Live wire and neutral wire.

Live wireNeutral wire
It carries current to the device from the source.It carries current from the device to the source.
It is red or brown in color.It is black or blue in color.

b. AC and DC.

ACDC
The current that changes magnitude and polarity is called AC.The current that doesn't change magnitude and polarity is called DC.
It is produced by an AC generator.It is produced by cells, batteries, etc.
It has a non-zero frequency.It has a zero frequency.

c. Filament and flueoresent lamp.

FilamentFluorescent
It is filled with inert gas.It is filled with mercury vapor.
Its average lifespan is about 1000 hours.Its average lifespan is about 3000 hours.
It is cheaper.It is expansive.
It converts 10% to light and 90% to heat energy.It converts 30% to light and 70% to heat energy.

d. Dynamo and electric motor.

DynamoElectric motor
It converts mechanical energy to electrical.It converts electrical energy to mechanical.
It works on the principle of Faraday's law of electromagnetic induction.It works on the principle of motor effects.
The direction of current can be found by using fleming's right-hand rule.The direction of current can be found by using fleming's left-hand rule.

e. Step up and step down transformer.

Step upStep down
It converts low AC voltage to high AC voltage.It converts high AC voltage to low AC voltage.
The number of turns is more in the secondary coil than in the primary.The number of turns is more in the primary coil than in the secondary.
It is used on the power transmission line to increase voltage.It is used in household devices to run at least 220V.

f. Tungsten and nichrome.

TungstenNichrome
It has very high resistance.It has comparatively low resistance.
It doesn't oxidize at high temperatures.It oxidizes in high temperatures.
It is the wire of nickel, etc.It is the wire of copper, etc.

g. Electricity obtained from generator and battery.

From generatorFrom battery
It generates AC electricity.It generates DC electricity.
Mechanical energy is converted into electrical.Chemical energy is converted into electrical.
Electricity produced by it changes its polarity.Electricity produced by it doesn't change its polarity.