All Problems

Electromagnetic Waves. Radiation

Problem 4.202

An alternating sinusoidal current of frequency ω\omega =1000 s1=1000 \mathrm{~s}^{-1} flows in the winding of a straight solenoid whose crosssectional radius is equal to R=6.0 cm.R=6.0 \mathrm{~cm} . Find the ratio of peak values of electric and magnetic energies within the solenoid.

Reveal Answer
We/Wm=1/8ε0μ0ω2R2=5.01015W_{e} / W_{m}=1 /_{8} \varepsilon_{0} \mu_{0} \omega^{2} R^{2}=5.0 \cdot 10^{-15}