As Shown in the Figure, a Circuit Consists of a Resistor

question 336

Multiple Choice

As shown in the figure, a circuit consists of a resistor $R = 17 \Omega$ in series with an ideal inductor $L = 49 \mathrm { H }$ having no resistance. At time $t = 0 \mathrm {~s}$ , there is a 12-A current in the circuit. At that instant, what is the rate of change of the current?

• A) \(- 19 \mathrm {~A} / \mathrm { s }\)
• B) \(- 35 \mathrm {~A} / \mathrm { s }\)
• C) \(- 4.2 \mathrm {~A} / \mathrm { s }\)
• D) \(- 27 \mathrm {~A} / \mathrm { s }\)
• E) \(- 12 \mathrm {~A} / \mathrm { s }\)

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Definitions:

Engine-Oil Additive

A substance added to engine oil to improve its properties, such as reducing friction, wear, or corrosion, and enhancing performance.

Sunk Cost

A cost that has already been incurred and cannot be removed and therefore should not be considered in an investment decision.

Straight-Line Depreciation

A method of allocating an asset's cost evenly over its useful life, resulting in a consistent depreciation expense each year.

Operating Costs

Expenses associated with the day-to-day functions of a business, excluding costs related to production or acquisition of goods.