The term "field inside a cavity inside a conductor" refers to the electric field present within a hollow space or cavity that is enclosed by a conducting material. The conducting material acts as a barrier, confining the electric field to the inside of the cavity.
The electric field inside a cavity inside a conductor is zero because any external electric field that is applied to the conductor will induce an equal and opposite electric field within the conductor. This induced electric field cancels out the external field inside the conductor, including within the cavity.
The shape and size of the cavity can affect the electric field inside a conductor by influencing the distribution of charges on the surface of the conductor. In general, a larger cavity will result in a weaker electric field inside the conductor, while a smaller cavity may result in a stronger electric field.
No, the electric field inside a cavity inside a conductor is not affected by the material of the conductor. As long as the conductor is a perfect conductor (meaning it has no resistance), the electric field inside the cavity will remain zero regardless of the material it is made of.
Yes, the electric field inside a cavity inside a conductor can be non-zero if the conductor is not a perfect conductor. In this case, there will be some internal resistance in the conductor, which can result in a non-zero electric field inside the cavity under certain conditions.