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A particle of charge 16 10⁻¹⁶ C moving with velocity 10 ~ms ⁻¹ along x -axis enters a region where magnetic field of induction B is along the y -axis and an electric field of magnitude 10^4 Vm ⁻¹ is along the negative z -axis. If the charged particle continues moving along x -axis, the magnitude of B is :

Options

  1. A16 10^3 ~Wb ~m ⁻²
  2. B2 10^3 ~Wb ~m ⁻²
  3. C1 10^3 ~Wb ~m ⁻²
  4. D4 10^3 ~Wb ~m ⁻²

Correct answer

C. 1 10^3 ~Wb ~m ⁻²

Step-by-step solution

Since particle is moving undeflected So, q_E=q v B B= E V = 10^4 10 =10^3 wb / m ^2

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