In analyzing electric circuits containing a battery and at least one resistor, what is the change in potential across a resistor as one moves through it in the direction of the current?
a) +i²R
b) -i²R
c) +iR
d) -iR
e) zero
Answer: d) -iR
You might also like to view...
The distance between adjacent galaxies in a typical cluster is about ________ times the size of a typical galaxy
A) two or three B) five or less C) ten to twenty D) a hundred E) a thousand
A tree stump is pulled northward by a 10-N force at the same time a 25-N force pulls it southward. The resultant force has a magnitude of
A) 0 N. B) 15 N. C) 25 N. D) 150 N.
Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00-cm-wide slit. What is the total angular width (2?) of diffracted sound waves when the speed of sound in air is 340 m/s.
A. 167° B. 83.6° C. 19.5° D. 41.8° E. 0.11°
Which of the following best describes the image from a plane mirror?
a. virtual and magnification equal to one b. real and magnification equal to one c. real and magnification less than one d. virtual and magnification greater than one