Question

a torch is rated at 2.5v and 750ma calculate the energy consumed in 4 hours

Answer 1

P = I x V

P = 1875

Now 4 hours = 240 mins

Energy = P x t = 1875 x 240 / 1000

= 450 J Ans

Answer 2

Explanation:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. Duringphotosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.