Leyden jar is associated with which field?

Leyden jar is associated with which field?

• A. Magnetism
• B. Electricity
• C. Optics
• D. Acoustics

Answer: (B)

This question tests understanding of electricity and how electrical energy can be stored. A Leyden jar is one of the earliest devices used to store static electricity. It’s basically a glass jar with a conductor on the inside and another conductor on the outside, with the glass acting as the dielectric between them. When charges are placed on the inner conductor and the outer conductor is held at the opposite potential, charge accumulates on both surfaces and a voltage exists across the dielectric. The stored energy is in the electric field between the conductors, making it a classic example of a capacitor and a topic in electricity and electrostatics. It’s not about magnetic fields, which would involve magnetism; it’s not about light or vision, which relate to optics; and it’s not about sound, which relates to acoustics.

This question tests understanding of electricity and how electrical energy can be stored. A Leyden jar is one of the earliest devices used to store static electricity. It’s basically a glass jar with a conductor on the inside and another conductor on the outside, with the glass acting as the dielectric between them. When charges are placed on the inner conductor and the outer conductor is held at the opposite potential, charge accumulates on both surfaces and a voltage exists across the dielectric. The stored energy is in the electric field between the conductors, making it a classic example of a capacitor and a topic in electricity and electrostatics. It’s not about magnetic fields, which would involve magnetism; it’s not about light or vision, which relate to optics; and it’s not about sound, which relates to acoustics.