Deriving Maxwell's Eqns - Is ∫E dl = -dq/dt x a x sinΦ/r² x A?

Therefore, the expression -dq/dt x a x sinΦ/r² x A is not a valid representation of Maxwell's equations. In summary, when deriving Maxwell's equations, the integral of the electric field in a vacuum should be equal to the negative of the time rate of change of the electric flux, which is defined as the electric field (E) multiplied by the vector area (A). The expression -dq/dt x a x sinΦ/r² x A is not a valid representation of this equation.
  • #1
kent davidge
933
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I was deriving Maxwell's equations and I found ∫ E dl (electric field in a vacuum) to be equal to -dq/dt x a x sinΦ/r² x A, where a is the acceleration of the source charge and A is the area. Is it correct?
 
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  • #2
No, it is not correct. The integral of the electric field in a vacuum should be equal to the negative of the time rate of change of the electric flux, which is defined as the electric field (E) multiplied by the vector area (A). This equation is given by:∫ E dl = - dΦ/dt = - d(EA)/dt
 

Related to Deriving Maxwell's Eqns - Is ∫E dl = -dq/dt x a x sinΦ/r² x A?

1. What are Maxwell's equations?

Maxwell's equations are a set of four fundamental equations that describe the behavior of electric and magnetic fields. They were first derived by James Clerk Maxwell in the 19th century and are a cornerstone of classical electromagnetism.

2. What is the significance of ∫E dl = -dq/dt x a x sinΦ/r² x A in Maxwell's equations?

This equation, known as Ampere's Law, is one of the four Maxwell's equations. It describes the relationship between the electric field and the current in a given system. It is important because it helps us understand the behavior of electric currents and their interactions with magnetic fields.

3. How is ∫E dl = -dq/dt x a x sinΦ/r² x A derived?

This equation is derived from the more general form of Ampere's Law, which states that the line integral of the magnetic field around a closed loop is equal to the current passing through the loop. By considering the electric field as the time derivative of the magnetic field, we can arrive at the specific form ∫E dl = -dq/dt x a x sinΦ/r² x A.

4. What does a, Φ, and r represent in ∫E dl = -dq/dt x a x sinΦ/r² x A?

In this equation, a represents the vector direction of the current, Φ represents the angle between the current and the line of integration, and r represents the distance from the current to the point where the electric field is being measured.

5. How is ∫E dl = -dq/dt x a x sinΦ/r² x A used in practical applications?

This equation is used in many practical applications, such as calculating the magnetic field produced by a current-carrying wire or solving problems involving electromagnetic induction. It is also used in the design and analysis of various electrical and electronic devices, such as motors and generators.

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