Question

An electronic flash lamp has 20 capacitors each of capacitance 5 micro farad connected in parallel the lamp is operated at 100v how much energy will be radiated in flash
Please solve it

Answer 1

Given: An electronic flash lamp has 20 capacitors each of capacitance 5 micro farad connected in parallel the lamp is operated at 100 V.

To find: How much energy will be radiated in flash?

Solution:

• Now we have given electronic flash lamp has 20 capacitors each of capacitance 5 micro farad.

• So:

                 total capacity will be 20 x 5 = 100 micro farad

• The energy radiated in the flash will be:

                 1/2 x CV^2

• Putting the values in it, we get:

                 1/2 x (100 x 10^-6) c 100^2

                 1/2 x (100 x 10^-6) c 10000

                 1/2 J

Answer:

             So the energy radiated in flash will be 1/2 Joules.