| ⇦ | 
| ⇨ |
A particle having a mass of 10⁻² kg carries a charge of 5 x 10⁻⁸C. The particle is given an initial horizontal velocity of 10⁵ m/s. In the presence of electric field E⃗ and magnetic field B⃗. To keep the particle moving in a horizontal direction, it is necessary that
(1) B⃗ should be perpendicular to the direction of velocity and E⃗ should be along the direction of velocity.
(2) Both B⃗ and E⃗ should be along the direction of velocity.
(3) Both B⃗ and E⃗ are mutually perpendicular and perpendicular to the d
Options
(a) (2) and (4)
(b) (1) and (3)
(c) (3) and (4)
(d) (2) and (3)
Correct Answer:
(2) and (3)
Explanation:
Force to the electric field acts along the direction of the electric field but force due to the magnetic field acts along a direction perpendicular to both the velocity of the charged particle and the magnetic field. Hence both statements (2) and (3) are ture. In statements (2), magnetic force is zero, so, electric force will keep the particle continue to move in horizontal direction. In statement (3), both electric and magnetic forces will be opposite to each other. If their magnitudes will be equal then t
Related Questions: - Which dimensions will be the same as that of time?
- The primary of a transformer when connected to a dc battery of 10 volt draws a current
- A hemispherical bowl of radius R is rotating about its axis of symmetry
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which dimensions will be the same as that of time?
- The primary of a transformer when connected to a dc battery of 10 volt draws a current
- A hemispherical bowl of radius R is rotating about its axis of symmetry
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
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