An Inductance L, Resistance R, and Ideal Battery of Emf $\varepsilon$

question 85

Multiple Choice

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

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

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Definitions:

Buffer

A solution that resists changes in pH when acid or alkali is added, mainly composed of a weak acid and its conjugate base.

Chemical Equation

A symbolic representation of a chemical reaction, showing the reactants, products, and, in some cases, the direction of the reaction.

Carbon Dioxide

A clear, unscented gas resulting from the burning of carbon-containing compounds and the act of respiration, which plants use in the process of photosynthesis.

Water

A ubiquitous chemical substance with the formula H2O, vital for all known forms of life and used in a myriad of industrial processes.