In the Figure,a Copper Bar Is in Contact with a Pair

question 9

Multiple Choice

In the figure,a copper bar is in contact with a pair of parallel metal rails and is in motion with velocity ν.A uniform magnetic field is present pointing downward,as shown.The bar,the rails,and the resistor R are all in the same plane.The induced current through the resistor R is

• A) from a to b.
• B) from b to a.
• C) There is no induced current through the resistor.

---

Definitions:

Persistent Fear

A continuous and enduring sense of fear that remains in the individual's psyche over an extended period, often leading to anxiety disorders.

Mania

A mental state characterized by extremely elevated mood, energy, and unusual thought patterns, often associated with bipolar disorder.

Obsession

Persistent, intrusive, and unwanted thoughts that cause anxiety or distress.

Social Phobia

also known as social anxiety disorder, is the intense fear of being judged or negatively evaluated by others in social situations.