Physics
One Kilowatt hour is equal to -

3.6 Mega Joule
3.2 Mega Joule
4.0 Mega Joule
3.8 Mega Joule

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Physics
Mica is used in electrical appliances such as electric iron because mica is

a bad conductor of heat as well as electricity
a bad conductor of heat but a good conductor of electricity
a good conductor of heat but a bad conductor of electricity
a good conductor of heat as well as electricity

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