Topic: Electromagnetics
A potential field is given by Φ = 2xy^2 - 3y^2 z. If x̂, ŷ, ẑ are the unit vectors along x, y and z directions respectively, the field intensity at (0, 1, 0) is:
- A. 0 V/m
- B. 2x̂ - 3ẑ
- C. -2x̂ + 3ẑ
- D. 2x̂ + 3ẑ
Answer: C. -2x̂ + 3ẑ
Explanation: E = -∇Φ = -(2y^2)x̂ - (4xy - 6yz)ŷ - (-3y^2)ẑ. E(0, 1, 0) = -2x̂ + 3ẑ.