How are electromagnetic waves produced? What is the source of energy of these waves? Draw a schematic sketch of the electromagnetic waves propagating along the + x-axis. Indicate the directions of the electric and magnetic fields. Write the relation between the velocity of propagation and the magnitudes of electric and magnetic fields.
CBSE OUTSIDE DELHI - SET 1 PATNA 2015
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Production: Electromagnetic waves are produced by "accelerated Charges‟.
The battery/Electric field that accelerates the charge carriers is the source of energy of em waves.
Schematic sketch/diagram.

$\text{c} = \frac{\text{E}}{\text{B}}$ $\overrightarrow{\text{E}}\times\overrightarrow{\text{B}}$ indicate the direction of propagation.
Directions of $\overrightarrow{\text{E}}$ Along $\overrightarrow{\text{y}}$ axis/Along ? axis
Directions of ? Along ? axis/Along ? axis
Relation: $\text{c} = \frac{\text{E}}{\text{B}}$.
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