Question 175: EM waves

Question

A plane electromagnetic wave with frequency of 30 MHz travels in free space. At particular point in space and time, electric field is 6 V/m. The magnetic field at this point will be x $$	imes$$ 10
$$-$$8
T. The value of x is ___________.

Accepted Answer

$$|B|\, = {{|E|} \over C} = {6 \over {3 	imes {{10}^8}}}$$
= 2 $$	imes$$ 10
$$-$$8
T
$$	herefore$$ x = 2

EM waves

A plane electromagnetic wave with frequency of 30 MHz travels in free space. At particular point in space and time, electric field is 6 V/m. The magnetic field at this point will be x $\times 10 -$8 T. The value of x is ___________.

Integer / Numeric Answer Type