In which component is the energy stored in the form of an electrostatic field?

The correct answer is the capacitor, as it is specifically designed to store electrical energy in the form of an electrostatic field. When a voltage is applied across the terminals of a capacitor, positive and negative charges accumulate on its plates, creating an electric field between them. This electric field is what enables the capacitor to store energy, which can be released back into the circuit when needed.

Capacitors are widely used in various electronic applications, including filtering, timing, and energy storage in power systems. The ability of capacitors to hold and release energy based on the electric field is fundamental to their function. This storage mechanism is different from other components in the circuit.

Resistors, for instance, do not store energy; instead, they dissipate energy in the form of heat when current flows through them. Inductors store energy in a magnetic field, not an electrostatic field. Transformers, primarily used to transfer electrical energy between two or more circuits, rely on magnetic fields to operate rather than electrostatic fields. Thus, the concept of energy storage in capacitors through an electrostatic field distinctly sets them apart from these other components.