7. Suppose the switch in the circuit shown has been closed for a very long time. What will happen to the current in the 9 2 resistor the instant that the switch is opened? (A) It will immediately drop to zero. (B) The current will at first be the same (in magnitude and direction) as when the switch was closed (then decrease over time). 9 V (C) The current will reverse direction, but will initially have the same magnitude (which will then decrease over 3 mH time). (D) The current will remain in the same direction, but will suddenly increase in magnitude (then decrease with time). (E) The current will reverse direction and suddenly increase (then decrease with time).

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7. Suppose the switch in the circuit shown has been closed for a very long time. What will happen
to the current in the 9 2 resistor the instant that the switch is opened?
(A) It will immediately drop to zero.
(B) The current will at first be the same (in magnitude and
30
direction) as when the switch was closed (then
decrease over time).
9 V
(C) The current will reverse direction, but will initially have
the same magnitude (which will then decrease over
3 mH
time).
(D) The current will remain in the same direction, but will
suddenly increase in magnitude (then decrease with
time).
(E) The current will reverse direction and suddenly increase (then decrease with time).
8. What will be the current in the 9 ohm resistor 25 seconds after the switch has been opened?
[Show all work] (4 points)
Transcribed Image Text:7. Suppose the switch in the circuit shown has been closed for a very long time. What will happen to the current in the 9 2 resistor the instant that the switch is opened? (A) It will immediately drop to zero. (B) The current will at first be the same (in magnitude and 30 direction) as when the switch was closed (then decrease over time). 9 V (C) The current will reverse direction, but will initially have the same magnitude (which will then decrease over 3 mH time). (D) The current will remain in the same direction, but will suddenly increase in magnitude (then decrease with time). (E) The current will reverse direction and suddenly increase (then decrease with time). 8. What will be the current in the 9 ohm resistor 25 seconds after the switch has been opened? [Show all work] (4 points)
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