In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative z-axis and magnetic field is along the positive x-axis. Then the direction of propagation of electromagnetic wave is :
(1) at 45º angle from positive y-axis
(2) negative y-axis
(3) positive z-axis
(4) positive y-axis
(2) negative y-axis
(3) positive z-axis
(4) positive y-axis
JEE-2024
Solution:
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The magnetic field at the centre of a wire loop formed by two semi circular wires of radii R1 = 2 πm and R2 = 4π m carrying current I = 4A as per figure given below is a × 10^–7 T. The value of a is ______. (Centre O is common for all segments)
