An Inductance L, Resistance R, and Ideal Battery of Emf

question 19

Multiple Choice

An inductance L, resistance R, and ideal battery of emf are wired in series and the circuit is allowed to come to equilibrium.A switch in the circuit is opened at time t = 0, at which time the current is /R.At any later time t the potential difference across the resistor is given by:

• A)(1 - e^-Lt/R)
• B)e^-Lt/R
• C)(1 + e^-Rt/L)
• D)e^-Rt/L
• E)(1 - e^-Rt/L)

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Definitions:

Net Present Value

The divergence in current value between cash receipts and disbursements over a set period.

Investment Projects

Initiatives undertaken by businesses to invest in resources with the expectation of generating future revenues or reducing costs.

Discount Factor

A factor employed in the discounted cash flow (DCF) methodology to calculate the current value of anticipated cash flows.

Payback Period

The length of time it takes for an investment to generate cash flows sufficient to recover the initial cost of the investment.