Make a list of electrical equipments at home which we get heat from.

Make a lost of electrical equipm ents at home which we get heat from.

How heating effect is used in electrical lamp. Name other lamps which use the heating effected ?

Suppose India had a target of producing by 2020 AD, 200,200 MW of electric power, ten percent of which was to be obtained from nuclear power plants. Suppose we are given that, on an average, the efficiency of utillization (i.e, conversion to electric energy) of thermal energy produced in a reactor was 25%. How much amount of fissionable uranium would our country need per year by 2020 ? Take the heat energy per fission of ""^(235)U to be about 200 MeV.

Classify different parts of plants from which we get vegetables.

Below is a list of plant fibres. From which part of the plant these are obtained? (a) Coir (b) Hemp (c ) cotton (d) jute

Nichrome name copper wire of same length and same radius ae connected in series circuit I is passed through them. Which wire gets heated up more ? Give reason.

Which prevents the loss of heat from our body?

When electricity passes through a bulb, it gives off :1. Sound 2. Light 3. Electricity 4. Heat Choose the correct option from the codes given below :

An electric heater of resistance 10Omega connected to 220 V power supply is immersed in the water of 1 kg. How long the electrical heater has to be switched on to increase its temperature from 30^(@)C to 60^(@)C . (The specific heat of water is s=4200J kg^(-1) /C )