Question

Class X
Subject- physics
1 How much energy is given to 5 coulomb of charge passing through 12V battery
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Answer 1

Energy = eV

Energy = eVHere e = 1.6 x 10^-19 Coulomb

Energy = eVHere e = 1.6 x 10^-19 Coulomb V = 12 V

Energy = eVHere e = 1.6 x 10^-19 Coulomb V = 12 V E = 1.6 x 10^-19 x 5 x 12 joules/e

Energy = eVHere e = 1.6 x 10^-19 Coulomb V = 12 V E = 1.6 x 10^-19 x 5 x 12 joules/e =9.6 x 10^-18 joules/e

Energy = eVHere e = 1.6 x 10^-19 Coulomb V = 12 V E = 1.6 x 10^-19 x 5 x 12 joules/e =9.6 x 10^-18 joules/e = 60 joules

Answer 2

energy = power × time
= (work÷time)×time
= work done
= 5C÷12V
= 5/12 Joule
0.416 Joule , answer