JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
An electromagnetic wave travelling in \(x\)-direction is described by field equation \(E_y = 300\sin\omega\left(t - \dfrac{x}{c}\right)\). If the electron is restricted to move in \(y\)-direction only with speed of \(1.5 \times 10^6\) m/s then ratio of maximum electric and magnetic forces acting on the electron is _______.
- A \(200\)
- B \(150\)
- C \(400\)
- D \(300\)
Answer & Solution
Correct Answer
(A) \(200\)
Step-by-step Solution
Detailed explanation
The maximum electric force acting on the electron is \(F_e = eE_0\). The maximum magnetic force acting on the electron is \(F_m = evB_0\), where \(v\) is the speed of the electron and \(B_0\) is the maximum magnetic field. The ratio of the maximum electric force to the maximum…
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