Q118 / 120 · VITEEE 2015 · Physics

Pick out the wrong statement.

A
Gauss's law of magnetism is given by $\alpha \oint \mathbf{B} \cdot \mathbf{d s}=0$
B
An EM wave is a wave radiated by a charge at rest and propagates through electric field only
Correct answer
C
A time varying electric field is a source of changing magnetic field
D
Faraday's law of EM induction is $\oint \mathbf{E . d l}=-\frac{d \phi_{B}}{d t}$

Solution

An electromagnetic wave is the wave radiated by an accelerated charge and propagates through space as coupled electric and magnetic field. These fields are oscillating perpendicular to each other.

Hence, the correct answer is option: 'C'.

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