1 kilowatt-hour = `overset(?)_` Joule?

1 kilowatt = overset(?)_ watt

1 kilo ampere = overset(?)_ Ampere?

1 watt - overset(?)___ .

1 horsepower = overset(?)_ watt

1 unit = overset(?)_ kilowatt-hour?

1 emu of current strength = overset(?)_ Ampere?

1 volt = overset(?)- esu of potential?

An electric iron which has a resistance of 80 Omega is used on 200V source. Calculate the electric energy consumed in kilowatt hour if it is used for 2 hours-

Kilo watt hour is the unit of-

Express each of the following recurring decimals in the form of an infinite geometric series and obtain their values in the form of rational numbers : 1.overset(.)4overset(.)1 + 2.2overset(.)1 overset(.)2