(a)Consider a region of space free from matter and from magnetic fields.Show that it cannot be permeated by an electric field of the form: \vec{E}(x, y, z)=\frac{A}{2}(y \hat{x}-x \hat{y}+z \hat{z})

where A is a constant value different from zero and with units V/m2. Now, consider that a magnetic field permeates the region of(a). Write an expression representing a time-varying magnetic field B(x,y, 2, t) that renders the vector field proposed in (a) suitable to describe an electric field. Check and demonstrate that the expression you found is a suitable representation of a magnetic field. Hence or otherwise, show that: \vec{B}=K x \hat{x}+K y \hat{y}+A t \hat{z} is not an adequate expression for amagnetic field for K #0 T/m2. is not an adequate expression for a magnetic field for K 0 T/m2.