Does the potential functionsatisfies the laplace’s equations.a)y...
We have
...(i)
...(ii)
and
...(iii)
Adding (1), (2) and (3)
i.e.
which is Laplace's equation. Thus the function
satisfies Laplace's equation.
View all questions of this test
Does the potential functionsatisfies the laplace’s equations.a)y...
Understanding Laplace's Equation
Laplace's equation is a second-order partial differential equation given by the formula: ∇²φ = 0. A function φ satisfies Laplace's equation if its Laplacian (the divergence of the gradient) is zero.
Given Potential Function
The potential function is defined as:
φ = q(x² + y² + z²)^(-1/2)
Calculating the Laplacian
To determine if φ satisfies Laplace's equation, we need to compute the Laplacian of φ.
1. Gradient Calculation:
- The gradient ∇φ involves partial derivatives of φ with respect to x, y, and z.
2. Divergence of the Gradient:
- The Laplacian is obtained by taking the divergence of the gradient calculated earlier.
Evaluating the Laplacian
When we compute the Laplacian for φ, we find that it simplifies to zero:
- The terms derived from the second derivatives of φ cancel out, confirming that ∇²φ = 0.
Conclusion
Since we verified that the Laplacian of the given potential function equals zero, we can conclude:
- The potential function φ = q(x² + y² + z²)^(-1/2) satisfies Laplace's equation universally, regardless of the value of q.
Thus, the correct answer is option 'A': Yes.
Does the potential functionsatisfies the laplace’s equations.a)y...
We have
...(i)
...(ii)
and
...(iii)
Adding (1), (2) and (3)
i.e.
which is Laplace's equation. Thus the function
satisfies Laplace's equation.