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What is the work done in moving a unit positive charge from infinity to that point in the electric field called?
- a)Electric potential
- b)Potential difference
- c)Electric current
- d)Electric circuits
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
What is the work done in moving a unit positive charge from infinity ...
- Electric potential, the amount of work needed to move a unit charge from a reference point to a specific point against an electric field.
- Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used.
- The potential energy for a positive charge increases when it moves against an electric field and decreases when it moves with the electric field; the opposite is true for a negative charge.
- Unless the unit charge crosses a changing magnetic field, its potential at any given point does not depend on the path taken. Although the concept of electric potential is useful in understanding electrical phenomena, only differences in potential energy are measurable.
- If an electric field is defined as the force per unit charge, then by analogy an electric potential can be thought of as the potential energy per unit charge. Therefore, the work done in moving a unit charge from one point to another (e.g., within an electric circuit) is equal to the difference in potential energies at each point.
- In the International System of Units (SI), electric potential is expressed in units of joules per coulomb (i.e., volts), and differences in potential energy are measured with a voltmeter.
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What is the work done in moving a unit positive charge from infinity ...
Electric Potential:
Moving a unit positive charge from infinity to a point in the electric field requires work to be done. This work done in moving the charge is known as electric potential at that point.
Explanation:
- Electric potential is defined as the work done in moving a unit positive charge from infinity to a specific point in the electric field.
- It is a scalar quantity and is measured in volts (V).
- The electric potential at a point in an electric field is directly related to the amount of work done in bringing a unit positive charge to that point.
- The electric potential decreases as the distance from the source of the electric field increases.
- Electric potential is used to calculate the potential energy of a charge in an electric field.
Significance:
- Understanding electric potential is crucial in analyzing and solving problems related to electric fields.
- It helps in determining the behavior of charges in an electric field and predicting how they will move.
- Electric potential is a key concept in the study of electromagnetism and is essential in the design and analysis of electric circuits.
In conclusion, the work done in moving a unit positive charge from infinity to a point in the electric field is known as electric potential. It plays a significant role in understanding the behavior of charges in electric fields and is essential in various applications related to electricity and magnetism.
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What is the work done in moving a unit positive charge from infinity to that point in the electric field called?a) Electric potentialb) Potential differencec) Electric currentd) Electric circuitsCorrect answer is option 'A'. Can you explain this answer?
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