A potential difference of 500 V is applied across a parallel plate capacitor . The separation between the plates is 2×10^-3 m . The plates of the capacitor are vertical. An electron is projected vertically upwards between the plates with a velocity of 10⁵ m/s and it moves undeflected between the plates. The magnetic field acting perpendicular to the electric field has magnitude of (a)0Wb/m² (b)10^-5 Wb/m² (c)10^-6 Wb/m² (d)none of these

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