The total energy of revolving electron in an atom_____________
Correct answer: B. Can never be positive
- A. Will always be positive
- B. Can never be positive
- C. Can have any value above zero
- D. Cannot be negative
Explanation
An electron bound to an atom has negative total energy when zero energy is defined as the electron completely free from the atom. A positive total energy would describe an unbound electron, so “can never be positive” is the intended choice.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Physics in Daily Life
Everyday physics explains motion, force, work, power, pressure, heat, light, sound and electricity through familiar devices and natural events. Topics include simple machines, friction, expansion, reflection and refraction, lenses, household circuits, electrical safety and magnetism, with mass distinguished from weight and heat distinguished from temperature.
Practise Physics in Daily Life
343 free Physics in Daily Life MCQs from Everyday Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Everyday Science questions like this
Everyday Science is on 41 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Physics in Daily Life questions
The temperature at which water boils depends mainly on ____________?
Siemens is the unit of__________________?
Steradian is the unit of_______________?
Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?
Which of the following has the largest wavelength?
Which of the following has the highest energy?