A proton of charge 1.6 x 10^-19 C is moved through a potential difference of 20 volt The energy gained by the proton is:
Correct answer: B. 32 x 10^-19J
- A. -32 x 10^-19J
- B. 32 x 10^-19J
- C. -32 x 10^19 J
- D. 32 x 10^19 J
- E. Zero
Explanation
The energy gained by a charged particle when it is moved through a potential difference can be calculated using the equation: Energy = charge (q) * potential difference (V). In this case, the charge of the proton is 1.6 x 10^(-19) C, and the potential difference is 20 volts. Plugging in these values into the equation, we get: Energy = (1.6 x 10^(-19) C) * (20 V). Calculating this expression, we find: Energy = 3.2 x 10^(-18) J. Therefore, the energy gained by the proton is 3.2 x 10^(-18) joules. As it is a numerical only one option B is correct.
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
Unit, joule per coulumb is equal to:
If 2uF and 4 uF capacitors connected in series. Their equivalent capacitance will be:
The electric field intensity between two uniformly, oppositely charged parallel plates is:
Two similar point charges, each of 1 coulomb, placed in free space 1m apart, repel each other with a force:
A capacitor is charged with a battery and energy stored is u. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is
What is the potential difference between two point in an electric field if it takes 600J of energy to move a charge of 2C between two points?