A. 1500V
B. 2000V
C. 2500V
D. 3000V
Answer:- The correct Answer is B
Solution
2000×0.04=12×40×10−6V2
or V2=4×10−6 or V=2000V.
A photographic flash unit consists of a xenon-filled tube. It gives a flash of average power 2000W for 0.04s. The flash due to discharge of a fully charged capacitor of 40μF. The voltage to which it is charged before a flash is given by the unit is :
Posted: 18-08-2022