What Is the Maximum Value of the Magnetic Field at a Distance

question 60

Multiple Choice

What is the maximum value of the magnetic field at a distance of $2.5 \mathrm {~m}$ from a light bulb that radiates $100 \mathrm {~W}$ of single-frequency sinusoidal electromagnetic waves uniformly in all directions? ( $\left. \varepsilon _ { 0 } = 8.85 \times 10 ^ { - 12 } \mathrm { C } ^ { 2 } / \mathrm { N } \cdot \mathrm { m } ^ { 2 } , \mu _ { 0 } = 4 \pi \times 10 ^ { - 7 } \mathrm {~T} \cdot \mathrm { m } / \mathrm { A } , c = 3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } \right)$

• A) \(0.80 \mu \mathrm { T }\)
• B) \(0.40 \mu \mathrm { T }\)
• C) \(0.10 \mu \mathrm { T }\)
• D) \(0.50 \mu \mathrm { T }\)
• E) \(0.60 \mu \mathrm { T }\)

---

Definitions:

Porcelain Dip Bowl

A specific type of serving bowl made from porcelain, typically used for dipping sauces or small appetizers.

Discontinued Product

A product that a company has decided to stop producing and selling, often due to declining sales or obsolescence.

Scrap Price

The amount of money that can be received for selling waste materials or remnants from production processes.

Idle Capacity

The unused portion of a company’s productive capacity, such as machinery or labor, that could be used for production but currently isn't.