An electron enters a chamber in which a uniform magnetic field is present as shown below. An electric field of appropriate magnitude is also applied, so that the electron travels undeviated without any change in its speed through the chamber. We are ignoring gravity. Then, the direction of the electric field is
An electron enters a chamber in which a uniform magnetic field is present as shown below. An electric field of appropriate magnitude is also applied, so that the electron travels undeviated without any change in its speed through the chamber. We are ignoring gravity. Then, the direction of the electric field is
- [KVPY 2013]
- A
opposite to the direction of the magnetic field
- B
opposite to the direction of the electron's motion
- C
normal to the plane of the paper and coming out of the plane of the paper
- D
normal to the plane of the paper and into the plane of the paper
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- [KVPY 2014]
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