Menu

Physicshelpline

Solution Search

Comments

Capacitors

Q- An electronic flashgun has a 1000 -µF capacitor that is charged to 100 V.

(a) How much energy is stored by the capacitor?

(b) What is the charge on the capacitor?

(c) When the photographer takes a picture, the flash fires for 1/2000 s. What is the average current through the flashtube?

(d) Find the power delivered to the flashtube?

(e) After a picture is taken, the capacitor has to be recharged by a power supply that delivers a maximum current of 10 mA. How long will it take to charge the capacitor?

Solution:

Go Back

Comment