A electron experiences a force (4.0^i+3.0^j)×10−13N in a uniform magnetic field when its velocity is 2.5^k×107 ms−1. When the velocity becomes (1.5^i−2.0^j)×107 ms−1, the magnetic force of the electron is zero. The magnetic field vector →B is:

A electron experiences a force (4.0^i+3.0^j)×10−13N in a uniform ma

1.	A electron experiences a force (4.0^i+3.0^j)×10−13N in a uniform magnetic field when its velocity is 2.5^k×107 ms−1. When the velocity becomes (1.5^i−2.0^j)×107 ms−1, the magnetic force of the electron is zero. The magnetic field vector →B is:
Answer» A electron experiences a force $(4.0^i + 3.0^j) \times 10^{- 13} N$ in a uniform magnetic field when its velocity is $2.5^k \times 10^{7} {m s}^{- 1}$ . When the velocity becomes $(1.5^i - 2.0^j) \times 10^{7} {ms}^{- 1}$ , the magnetic force of the electron is zero. The magnetic field vector $\to B$ is:

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A electron experiences a force (4.0^i+3.0^j)×10−13N in a uniform magnetic field when its velocity is 2.5^k×107 ms−1. When the velocity becomes (1.5^i−2.0^j)×107 ms−1, the magnetic force of the electron is zero. The magnetic field vector →B is:

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