The fundamental construction of a capacitor comprises_____________?
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Answer: B. two conductors separated by an insulator
Explanation
A capacitor requires conducting plates to store charge and an insulator to block direct current. The insulating material prevents electrons from flowing freely between the two separate conducting surfaces. Without the insulating barrier the device would simply act as a shorted wire instead of storing energy. The fundamental components of any standard capacitor are two conductors separated by a dielectric medium. Dielectric materials are essential because they polarize in response to an applied electric field. Common insulating materials used in manufacturing capacitors include ceramic paper plastic and mica.
This basic construction principle applies to all electronic filters power supplies and timing circuits. Engineers use this configuration to block direct current while allowing alternating current signals to pass. Understanding this helps in designing reliable electronic hardware for consumer and industrial applications. Option A is incorrect because two insulators cannot store concentrated charges without an intervening conductor. Option C is wrong since insulators alone lack the free charge carriers necessary for plate conduction. Option D is incorrect because two conductors without an insulator would immediately short circuit upon contact.
- Subject
- Engineering
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- Electrical Engineering
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- medium
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