CUET · PHYSICS · PYQ PAPER 2023
The magnetic field in a travelling electromagnetic wave has a peak value of 30 nT. The peak value of electric field strength is : (speed of light in free space is \( 3 \times 10^8 \text{ m/s} \)).
- A \(9.0 V / m\)
- B \(3.0 V / m\)
- C \(6.0 V / m\)
- D \(18.0 V / m\)
Answer & Solution
Correct Answer
(A) \(9.0 V / m\)
Step-by-step Solution
Detailed explanation
\(E_0 = c B_0\) \(E_0 = (3 \times 10^8 \text{ m/s}) \times (30 \times 10^{-9} \text{ T})\) \(E_0 = 9.0 \text{ V/m}\)
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