A point charges 2nC is located at orgin . What is the potential at (1, 0, 0)?
Correct answer: D. 18
- A. 12
- B. 14
- C. 16
- D. 18
Explanation
Electric Potential = kq / r Where: k= 9 x 109 Nm2C-2 q = 2nC = 2 x 10-9 C r = (1, 0, 0) = 1m Electric Potential = (9 x 109) x (2 x 10-9) / 1 Electric Potential = 18 V
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
A point charge Q is placed at a distance d from the centre of an uncharged conducting sphere of radius R. The potential of the sphere is (d > R):
An insulated conductor initially free from charge is charged by repeated contacts with a plate which after each contact is replenished to a charge Q. If q is the charge on the conductor after first operation then the maximum charge which can be given to the conductor is:
The equivalent capacitance of the combination of the capacitors shown below is:
A point charges 0.4nC is located at (2,3,3). Find the potential differences between (2,3,3) m and (-2,3,3)m due to the charge:
What is the maximum energy that can be stored in a capacitor?
What is the voltage across the 2F capacitor?