-
The input impedance of the permanent magnet moving coil (PMMC) voltmeter is infinite. Assuming that the diode shown in the figure below is ideal, ther eading of the voltmeter in Volts is
-
- 4.46
- 3.15
- 2.23
- 0
Correct Option: A
V = 2x²y + 3y²z + 4z²x
Curl (grad v) = ∇ × ∇v
| ∇v = i | (2y²y + 3y²z + 4z²x) + ̂j | (2y²y + 3y²z + 4z²x) + k | (2y²y + 3y²z + 4z²x) + k | |||
| ∂x | ∂y | ∂z |
∇v = i[4xy + 4z²] + ̂j[2x² + 6yz] + k[3y² + 8zx]
= ̂i(6y - 6y) -̂j(8z - 8z) + ̂k(4x - 4x) = 0
