JEE Main 9 Jan 2019 Shift 2 Solved Paper

Average energy density of magnetic field,
uB =

B02

2µ0

, B0 is maximum value of magneticfield.
Average energy density of electric field,
uE =

ε0∊02

2

now , ∊0 = CB0 , C2 =

1

µ0∊0

uE = ∊0/2×C2B02
= ∊0/2×

1

µ0∊0

×B02 =

B02

2µ0

= uB
uE = uB
since energy density of electric & magneticfield is same, energy associated with equalvolume will be equal.
uE = uB