" 2.What is the meaning of the line 'Both worry with the laboured ease of loss'? "

What is the meaning of the line “Both wry with the laboured ease of loss”.

What is Loss

What are labour pains ?

What is mean by Electric field lines ?

What are the implications of the loss of biodiversity?

What do you mean by magnetic lines of force?

A 500W electric heater is designed to work with a 200 V line. If the voltage of the line drops to 160V, then what will be the percentage loss of the heat developed?