Answer:
energy stored in the magnetic field of coil is 6 J
energy per second dissipated in the resistance of the coil is 400 W
Explanation:
Given data
inductance = 3.0 H
resistance = 100Ω
current = 2.0 A
to find out
energy stored in the magnetic field and energy per second dissipated
solution
we know that energy stored in the magnetic field is express as
E = 1/2 × L×I²
here E is energy store and L is inductance and I is current
put all value we get
E = 1/2 × L×I²
E = 1/2 × 3 ×2²
E = 6 J
energy stored in the magnetic field of coil is 6 J
and
energy per second is power
so power = I²×R
power = 2² × 100
power = 400 W
so energy per second dissipated in the resistance of the coil is 400 W
