A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in series across the same 120-volt source, the current drawn from the source in amperes is
a. 3.
b. 6.
c. 9.
d. 12.
e. none of the above.
a
You might also like to view...
As the number of loops in a current-carrying wire coil is increased, the magnetic field becomes
A) more spread out. B) more stable. C) stronger. D) weaker. E) none of the above
A curved mirror that cannot produce a real image of an object is ________.
Fill in the blank(s) with the appropriate word(s).
A transverse periodic wave is represented by the equation y(x, t) = 1.50 cm sin(1,500 rad/s t - 10.0
x). Another transverse wave is represented by the equation y(x, t) = 1.50 cm sin(1,500 rad/s t - 10.0
x). What is the equation that represents the superposition of the two waves?
A. y(x, t) = 3.0 cm sin(1,500 rad/s t - 10.0
x)
B. y(x, t) = 3.0 cm sin(1,500 rad/s t) cos(10.0x)
C. y(x, t) = +3.0 cm cos(1,500 rad/s t) sin(10.0x)
D. y(x, t) = 3.0 cm sin(1,500 rad/s t + 10.0x)
When an ice cube in a glass of water melts, the water level
A) rises. B) falls. C) remains the same.