Charged Ring: in the Figure, a Ring 0

question 53

Multiple Choice

Charged ring: In the figure, a ring 0.71 m in radius carries a charge of + 580 nC uniformly distributed over it. A point charge Q is placed at the center of the ring. The electric field is equal to zero at field point P, which is on the axis of the ring, and 0.73 m from its center. (ε₀ = 8.85 × 10^-12 C²/N ∙ m²) The point charge Q is closest to

• A) -210.
• B) -300.
• C) -420.
• D) 210.
• E) 300.

---

Definitions:

National Governments

The organization that governs a nation, responsible for creating and enforcing laws, managing the economy, and providing public services.

Reserve Currency

A foreign currency held in significant quantities by governments and institutions as part of their foreign exchange reserves.

Financial Crisis

A situation in which the value of financial institutions or assets drops rapidly, leading to a loss of confidence in the financial system and, potentially, bank failures or economic downturns.

Weakening

A decline in strength, value, or effectiveness, often referring to currencies, economies, or company performance.