A capacitor is a device that stores energy. The capacitor of a camera flash unit has a charge of 0.83 C and a voltage of 480 V. How much energy is stored in
the capacitor to convert electrical energy into light energy?
e

199.2J

Explanation:

To calculate the the amount of energy stored in a capacitor, we use the following formula;

W = ½ QV

Where;

W = energy stored (joules)

Q = charge (Coulombs)

V = voltage (volts)

According to the information provided in this question, the capacitor of a camera flash unit has a charge (Q) of 0.83 C and a voltage (V) of 480 V.

Using W = ½ QV

W = ½ × 0.83 × 480

W = ½ × 398.4

W = 398.4/2

W = 199.2

The amount of energy stored in the capacitor to convert electrical energy into light energy is 199.2J.

the answer is b ) square root of 5

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.