For a Long Ideal Solenoid Having a Circular Cross-Section,the Magnetic

question 26

Multiple Choice

For a long ideal solenoid having a circular cross-section,the magnetic field strength within the solenoid is given by the equation B(t) = 5.0t T,where t is time in seconds.If the induced electric field outside the solenoid is 1.1 V/m at a distance of 2.0 m from the axis of the solenoid,find the radius of the solenoid.

• A) 0.30 m
• B) 77 m
• C) 0.94 m
• D) 9.0 m

---

Definitions:

Salvage Value

The appraisal of an asset’s market price at the exhaustion of its operational time.

Depreciation Rates

The percentage at which an asset's value is reduced to account for wear and tear over its useful life.

Units-of-activity Method

A depreciation method that allocates the cost of an asset over its useful life based on units of production or use, rather than passage of time.

Straight-line Method

A method of calculating depreciation by evenly allocating the cost of an asset over its estimated useful life.