Which of the following is not a source of electrical energy ?

Which of the following is not a consumer of electrical energy ?

Which of the following is used source of electrical energy

Namitha is jounalist. She used her pen camera to capture the photographs of a crime that took place on the way to her office. Which of the following is the source of the electrical energy which must be used in the said camera ?

Which of the following is not a unit of electric energy?

Out of the following, which one is not a source of electrical energy?

Which of the following is the biggest source of electricity ?