Discussion
An irrotational field \( \mathbf{F} \) may always be written locally as
Answer: D
Irrotational means \( \nabla \times \mathbf{F} = \mathbf{0} \), and since the curl of any gradient vanishes identically, a scalar potential is the natural representation. A vector potential belongs to the solenoidal case, where the divergence rather than the curl is zero
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