The amount of work done in joule in carrying a charge+q along the closed path PQRSP between the oppositely charged metal plates is (Where E is the electric field between the plates):
Correct answer: A. 0 Joules
- A. 0 Joules
- B. E*q
- C. -E*q
- D. q*V
Explanation
The correct answer is Option A: 0 Joules. In electrostatics, the electric field is conservative, meaning that the work done in moving a charge around a closed path is zero. This is because the electric potential energy at the start and end points of the path is the same, leading to no net work being done. Options B, C, and D suggest scenarios where work is done, which isn't applicable to a closed path. Specifically, Option B implies direct work in a linear path, Option C suggests work against the field, and Option D applies to potential difference work, none of which fit a closed loop scenario.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electrostatics
Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
Practise Electrostatics
831 free Electrostatics MCQs from Physics, 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 Physics questions like this
Physics is on 16 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 Electrostatics questions
If the distance between the plates of parallel plates condenser is increased, its potential will:
Which diagram represent the electric fields of a negative point charge, shown by.
A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10V. The potential at the centre of the sphere is:
The graph shows the growth of charge with potential differences between plates. The area under the graph shows:
In the electric field of a point charge q,a certain charge is carried from point A to B, C,D and E. Then the work done:
A charge particle is free to move in an electric field. It will travel: