JEE PYQ: Electromagnetic Waves Question 35
Question 35 - 2019 (09 Jan 2019 Shift 2)
The energy associated with electric field is ($U_E$) and with magnetic fields is ($U_B$) for an electromagnetic wave in free space. Then:
(1) $U_E = \frac{U_B}{2}$
(2) $U_E > U_B$
(3) $U_E < U_B$
(4) $U_E = U_B$
Show Answer
Answer: (4)
Solution
Since energy density of electric and magnetic field is same, $U_E = U_B$.