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A resistor and an ideal inductor are connected in series to an ideal battery having a constant terminal voltage V0.
(a) At the moment contact is made with the battery, the voltage across the resistor is

a. V 0/e.
b V 0.
c. V 0/2.
d. zero.

(b) At the moment contact is made with the battery, the voltage across the inductor is
a. V 0/2.
b. V 0/e.
d. c. V 0.
zero.

Respuesta :

Poltergeist

Answer:

(a). d. zero.

(b). c. [tex]V_0[/tex]

Explanation:

(a).

At the instant the switch is closed, there is no current in the resistor ( the inductor has prevented that), and therefore, there is no voltage across the resistor; Hence, choice d is correct.

(b).

Since there is no voltage drop across the resistor, all the voltage of the battery appears in the inductor, i.e the inductor and the battery are at the same potential [tex]V_0[/tex]—and they must be in order to protect Kirchhoff's voltage law.

Thus, choice c stands correct.

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