A light bulb with a tungsten filament is attached to a source of variable voltage. As the voltage is increased on the bulb,
a. the bulb's resistance decreases.
b. the bulb's resistance increases.
c. the current in the bulb decreases.
d. the power dissipated remains constant.
b
You might also like to view...
A horizontal force of magnitude 6.5 N is exerted tangentially on a Frisbee of mass 32 grams and radius 14.3 cm. Assuming the Frisbee, a uniform disk, is originally at rest and the force is exerted for 0.08 s, determine the angular velocity of rotation about the central axis when the Frisbee is released
The low density universe is an open one, with expansion continuing forever
Indicate whether the statement is true or false
Small risks may seem more risky than large risks under certain circumstances
What will be an ideal response?
In order to produce precipitation, an air mass must rise because rising air
A) allows water droplets more time in the cloud where they can grow in size. B) produces downdrafts which increases the evaporation of droplets from the cloud. C) supports the downfall of raindrops. D) all of the above.