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 × 10-8 T. The value of x is .

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 × 10-8 T. The value of x is . (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

| B |=(| E |/ C )=(6/3 × 108) =2 × 10-8 T ∴ x =2

Q. A plane electromagnetic wave with frequency of $30 M Hz$ 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 $x \times 1 0^{- 8} T$ . The value of $x$ is _______.

$∣ B ∣ = \frac{∣ E ∣}{C} = \frac{6}{3 \times 1 0 ^{8}}$
$= 2 \times 1 0^{- 8} T$
$∴ x = 2$

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

∣B∣=C∣E∣​=3×1086​ =2×10−8T ∴x=2

Q. A plane electromagnetic wave with frequency of $30 M Hz$ 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 $x \times 1 0^{- 8} T$ . The value of $x$ is _______.

$∣ B ∣ = \frac{∣ E ∣}{C} = \frac{6}{3 \times 1 0 ^{8}}$
$= 2 \times 1 0^{- 8} T$
$∴ x = 2$