Three identical resistors are connected in series to a 12-V battery. What is the voltage across any one of the resistors?
A) 12 V
B) 3 V
C) 36 V
D) 0 V
E) 4 V
E
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What will be an ideal response?
In a capacitor in an AC circuit, the voltage:
a. lags the current by 90°. b. may lead or lag the current depending on the frequency. c. leads the current by 90°. d. is in phase with 70.7% of the current.
If you are in the Earth's umbra on the Earth's surface, then
A) the Moon is always visible. B) it must be a lunar eclipse of some type. C) it must be a total solar eclipse. D) it is night time. E) the Sun is always visible.
The direction in which the potential changes at the greatest rate is in the direction
A) of the gradient of the potential. B) perpendicular to the electric field. C) perpendicular to the gradient of the potential. D) of the partial derivative with respect to x. E) cannot be determined