Question #74
The circuit shown at the left below has been rendered operable using
the setup photographed at the right. Closing the switch by pushing it to
the left connects a capacitor and the two light bulbs across the battery
as shown in the circuit. This particular circuit uses a 3-volt battery,
two 1.5-volt light bulbs, and a 1-Farad capacitor.
When the switch is closed, connecting the circuit, what would happen?
- (a) both lamps will light.
- (b) only the upper lamp will light.
- (c) only the lower lamp will light.
- (d) neither lamp will light.
If one of the lamps were to light, it would:
- (a) go on and stay on at the same brightness.
- (b) go on brightly and decrease its intensity to a constant zero level.
- (c) go on dimly and increase its intensity to a constant bright level.
Click here for Answer #74 after July 23, 2001.
Question of the Week
Outreach Index Page
Lecture-Demonstration Home Page
For questions and comments regarding the Question of the
Week contact
Dr. Richard
E. Berg by e-mail or using phone number or regular mail address
given on the Lecture-Demonstration Home
Page.