Class 12 Exam > Class 12 Questions > Can you explain the answer of this question b...
Start Learning for Free
Can you explain the answer of this question below:
A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.
- A:20 eV
- B:50 eV
- C:30 eV
- D:40 eV
The answer is b.
Most Upvoted Answer
Can you explain the answer of this question below:A uniform electric f...
Electric Potential Energy in Uniform Electric Field
Electric potential energy is the energy possessed by a charged particle due to its position in an electric field. The electric potential energy of a charged particle in a uniform electric field can be calculated using the formula:
ΔU = qEd
Where ΔU is the change in potential energy, q is the charge of the particle, E is the magnitude of the electric field, and d is the distance moved by the particle in the direction of the electric field.
Calculation
Given: E = 100 V/m, d = 0.5 m, q = -1.6 × 10^-19 C (charge of an electron)
Substituting the values in the formula:
ΔU = (-1.6 × 10^-19 C) × (100 V/m) × (0.5 m)
ΔU = -8 × 10^-18 J
The negative sign indicates that the electron loses potential energy as it moves in the direction of the electric field.
To convert this value to electron volts (eV), we can divide by the charge of an electron:
ΔU = (-8 × 10^-18 J) / (-1.6 × 10^-19 C/electron)
ΔU = 50 eV
Therefore, the change in potential energy of the electron is 50 eV.
Answer: Option B - 50 eV
Electric potential energy is the energy possessed by a charged particle due to its position in an electric field. The electric potential energy of a charged particle in a uniform electric field can be calculated using the formula:
ΔU = qEd
Where ΔU is the change in potential energy, q is the charge of the particle, E is the magnitude of the electric field, and d is the distance moved by the particle in the direction of the electric field.
Calculation
Given: E = 100 V/m, d = 0.5 m, q = -1.6 × 10^-19 C (charge of an electron)
Substituting the values in the formula:
ΔU = (-1.6 × 10^-19 C) × (100 V/m) × (0.5 m)
ΔU = -8 × 10^-18 J
The negative sign indicates that the electron loses potential energy as it moves in the direction of the electric field.
To convert this value to electron volts (eV), we can divide by the charge of an electron:
ΔU = (-8 × 10^-18 J) / (-1.6 × 10^-19 C/electron)
ΔU = 50 eV
Therefore, the change in potential energy of the electron is 50 eV.
Answer: Option B - 50 eV
Free Test
FREE
| Start Free Test |
Community Answer
Can you explain the answer of this question below:A uniform electric f...
Question is wrong because there is no relation bw height and electric field
|
Explore Courses for Class 12 exam
|
|
Top Courses for Class 12View all
Question Description
Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b..
Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b..
Solutions for Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. defined & explained in the simplest way possible. Besides giving the explanation of
Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b., a detailed solution for Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. has been provided alongside types of Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. theory, EduRev gives you an
ample number of questions to practice Can you explain the answer of this question below:A uniform electric field 100 V/ m is directed vertically downwards. Find the change in potential energy of an electron whose height decreases by 0.5 m.A:20 eVB:50 eVC:30 eVD:40 eVThe answer is b. tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup