At a Certain Instant of Time a Particle with Charge $\mu$

question 104

Multiple Choice

At a certain instant of time a particle with charge q = 25 $\mu$ C is located at x = 4.0 m, y = 2.0 m; its velocity at that time is v = -20 m/s . If you are at the origin, what do you measure as the magnitude of the magnetic field due to this moving point charge?

• A) 6.8 pT
• B) 1.1 pT
• C) 5.6 pT
• D) 2.2 pT
• E) 4.4 pT

---

Definitions:

Token Economy

A behavior modification system used to encourage a desired behavior through the use of tokens that can be exchanged for various rewards.

Psychiatric Institution

A medical facility specializing in the diagnosis, treatment, and care of individuals with mental illnesses.

Poker Chip

An often colorful, round, and flat object used in games of chance, typically made of plastic or clay, representing a certain amount of money or scoring points.

Systematic Desensitization

A behavior therapy used to reduce phobic or anxiety responses through gradual exposure to the feared object or situation coupled with relaxation training.