The potential difference between the terminals of a battery, when current flows to an external circuit, is referred to as the
A)
emf.
B)
terminal voltage.
B
You might also like to view...
In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.40. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley
a.
3.4 m/s2
b.
3.7 m/s2
c.
4.2 m/s2
d.
3.9 m/s2
e.
5.4 m/s2
Suppose a Young's experiment is carried out in air, and then, in a second experiment, the apparatus is immersed in water. In what way does the distance between bright fringes change?
1.They move further apart. 2.They move closer together. 3.There is no change.
A possible means for making an airplane radar-invisible is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.84 cm, and the index of refraction of the polymer is n = 1.6, how thick would the coating be if a 180° phase change occurs at both surfaces?
a. 24 mm c. 32 mm b. 7.5 mm d. 6.0 mm
Which of the following observations confirms that Sgr A at the center of our galaxy is indeed a supermassive black hole?
A) measurements of radio emission from gas around Sgr A B) measurements of occasional X-ray emission from Sgr A C) measurements of the orbits of stars around Sgr A D) measurements of trans-dimensional space warps in the vicinity of Sgr A