A. CAPACITOR FOR A CAMERA FLASH A capacitor is used in a typical flash for a “point-and-shoot” camera. The figure shows a circuit for a camera flash, where a 1.5V cell battery is charging the 2000 µF capacitor. When a flash is required the energy stored in the capacitor is made to discharge through a discharge tube in 0.001 s, giving a powerful flash. Problem Solving: a) If we change the battery into a 5.0V cell, instead of using 1.5V cell, how much energy will be stored in the capacitor? b) If the flash lasts for about 0.001 s, what is the power delivered by the capacitor during this brief time? c) If the dielectric used in the capacitor were a 0.010-mm-thick sheet of Strontium titanate (k=234), what would be the surface area of the capacitor plates?
A. CAPACITOR FOR A CAMERA FLASH A capacitor is used in a typical flash for a “point-and-shoot” camera. The figure shows a circuit for a camera flash, where a 1.5V cell battery is charging the 2000 µF capacitor. When a flash is required the energy stored in the capacitor is made to discharge through a discharge tube in 0.001 s, giving a powerful flash. Problem Solving: a) If we change the battery into a 5.0V cell, instead of using 1.5V cell, how much energy will be stored in the capacitor? b) If the flash lasts for about 0.001 s, what is the power delivered by the capacitor during this brief time? c) If the dielectric used in the capacitor were a 0.010-mm-thick sheet of Strontium titanate (k=234), what would be the surface area of the capacitor plates?
Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A. CAPACITOR FOR A CAMERA FLASH
A capacitor is used in a typical flash for a “point-and-shoot” camera. The figure shows a circuit for a camera flash, where a 1.5V cell battery is charging the 2000 µF capacitor. When a flash is required the energy stored in the capacitor is made to discharge through a discharge tube in 0.001 s, giving a powerful flash.
Problem Solving:
a) If we change the battery into a 5.0V cell, instead of using 1.5V cell, how much energy will be stored in the capacitor?
b) If the flash lasts for about 0.001 s, what is the power delivered by the capacitor during this brief time?
c) If the dielectric used in the capacitor were a 0.010-mm-thick sheet of Strontium titanate (k=234), what would be the surface area of the capacitor plates?
Transcribed Image Text:A. CAPACITOR FOR A CAMERA FLASH
Switch
A capacitor is used in a typical flash for a "point-
and-shoot" camera. The figure shows a circuit for
a camera flash, where a 1.5V cell battery is
charging the 2000 µF capacitor. When a flash is
required, the energy stored in the capacitor is
made to discharge through a discharge tube in
0.001 s, giving a powerful flash.
Discharge
Tibe
1.5V
2,000 pF
Figure 3. A schematic diagram for a camera flash
circult. Illustrated by Marc Christian Perez
Problem Solving:
Directions. Read each statement then perform the tasks that follow. Write your
computation on the space provided and box your final answer.
a) If we change the battery into a 5.0V cell, instead of using 1.5V cell, how much energy
will be stored in the capacitor?
b) If the flash lasts for about 0.001 s, what is the power delivered by the capacitor
during this brief time?
CR Uncs
c) If the dielectric used in the capacitor were a 0.010-mm-thick sheet of Strontium
titanate (k=234), what would be the surface area of the capacitor plates?
EUCATION
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