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FAQs on Irodov Solutions: Constant Electric Field in Vacuum (3.1) - Physics Class 12

1. What is a constant electric field in vacuum?
Ans. A constant electric field in vacuum refers to a situation where the electric field strength remains the same throughout a given region of vacuum. In other words, the magnitude and direction of the electric field do not change within that region.
2. How is the strength of a constant electric field determined in vacuum?
Ans. The strength of a constant electric field in vacuum is determined by the magnitude of the electric field vector. This vector represents the force per unit charge experienced by a test charge placed in the field. The magnitude of the electric field is given by the formula E = F/q, where E is the electric field strength, F is the force experienced by the test charge, and q is the magnitude of the test charge.
3. What are the properties of a constant electric field in vacuum?
Ans. A constant electric field in vacuum possesses the following properties: - The electric field lines are parallel and evenly spaced. - The electric field strength is the same at all points within the field. - The electric field lines are straight and do not intersect each other. - The electric field lines point in the direction of the electric field vector.
4. How does a constant electric field affect charged particles in vacuum?
Ans. In a constant electric field, charged particles experience a force proportional to the magnitude of the electric field. The force acts in the direction of the electric field for positively charged particles and in the opposite direction for negatively charged particles. This force can cause charged particles to accelerate or decelerate depending on the direction of the field and the charge of the particle.
5. Can a constant electric field exist in a medium other than vacuum?
Ans. Yes, a constant electric field can exist in a medium other than vacuum. However, the presence of a medium can introduce additional factors such as polarization and dielectric constants, which may modify the behavior of the electric field. In vacuum, these factors are absent, making it easier to analyze and understand the properties of a constant electric field.
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