A particle of mass m and charge q is thrown from origin at t=0 with velocity 2^i+3^j+4^k m/s in a region with uniform magnetic field →B=2^i T. After time t=πmqB sec, an electric field is switched on such that the particle moves on a straight line path with a constant speed. Then the electric field can be expressed as :(B is the magnitude of magnetic field )

A particle of mass m and charge q is thrown from origin at t=0 with ve

1.	A particle of mass m and charge q is thrown from origin at t=0 with velocity 2^i+3^j+4^k m/s in a region with uniform magnetic field →B=2^i T. After time t=πmqB sec, an electric field is switched on such that the particle moves on a straight line path with a constant speed. Then the electric field can be expressed as :(B is the magnitude of magnetic field )
Answer» A particle of mass $m$ and charge $q$ is thrown from origin at $t = 0$ with velocity $2^i + 3^j + 4^k m/s$ in a region with uniform magnetic field $\to B = 2^i T$ . After time $t = \frac{π m}{q B} sec$ , an electric field is switched on such that the particle moves on a straight line path with a constant speed. Then the electric field can be expressed as : $(B$ is the magnitude of magnetic field $)$

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