Question : Which of the following is correctly matched?

Option 1: Electric force - kilowatt minute

Option 2: Electric potential - kilowatt seconds

Option 3: Electric energy - kilowatt-hour

Option 4: Electric power - kilohour

Question : The current which flows in a telephone line is_____.

Option 1: sound energy

Option 2: electric energy

Option 3: radio energy

Option 4: mechanical energy

Question : The heating of a coil is proportional to the nth power of the time of flow of current through it, where n is equal to:

Option 1: +2

Option 2: -2

Option 3: +1

Option 4: -1

Question : What is the unit of energy in the International System of Units?

Option 1: Fahrenheit

Option 2: Celsius

Option 3: Kelvin

Option 4: Joule

Question : Newton-metre (Nm) is the SI unit of which of the following physical quantities?

Option 1: Acceleration

Option 2: Torque

Option 3: Power

Option 4: Force