| ⇦ | 
| ⇨ |
A uniform electric field and uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron
Options
(a) will turn towards right of direction of motion
(b) speed will decrease
(c) speed will increase
(d) will turn towards left direction of motion
Correct Answer:
speed will decrease
Explanation:
v⃗ and B⃗ aer in same direction so that magnetic force on electron becomes zero, only electric force acts. But force on electron due to electric field is opposite to the direction of velocity.
Related Questions: - In a laser tube, all the photons
- In Young’s double slit experiment, the fringe width is 1×10⁻⁴ m, if the distance
- Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons
- A stone is tied to a string of length l and whirled in a vertical circle with the other end
- The root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a laser tube, all the photons
- In Young’s double slit experiment, the fringe width is 1×10⁻⁴ m, if the distance
- Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons
- A stone is tied to a string of length l and whirled in a vertical circle with the other end
- The root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply