Question

In a current-carrying conductor varying electric field generates

Answer 1

Current-carrying conductor:

1. A varying electric field is a field that changes with respect to time.
2. According to Maxwell's electromagnetic theory, a changing electric field can generate a time-varying magnetic field.
3. From Maxwell's equation, $\mathbf{\nabla }\times \mathit{B}=\mu \mathit{J}+\mu \epsilon \frac{\partial \mathit{E}}{\partial t}$, Where $E$ and $B$ are the time varying electric and magnetic fields, J is the electric current density, $\mu$ and $\epsilon$ are the magnetic permeability and electric permittivity respectively.
4. In the case of electromagnetic waves, varying magnetic field generate a time-varying electric field and vice versa. That's why electromagnetic waves can travel without any medium.

Therefore, varying electric field can generates a varying magnetic field.