| ⇦ | 
| ⇨ |
The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. The number of electrons striking the target per second is
Options
(a) 5 x 10¹⁶
(b) 1 x 10¹⁷
(c) 4 x 10¹⁵
(d) 2 x 10¹⁶
Correct Answer:
2 x 10¹⁶
Explanation:
Let n = number of electrons striking per sec.
e = 1.6 × 10⁻¹⁹ = charge on each electron
Charge per second = n × 1.6 × 10⁻¹⁹
Current = n × 1.6 × 10⁻¹⁹
3.2 × 10⁻³ = n × 1.6 × 10⁻¹⁹
n = 3.2 × 10⁻³ / 1.6 × 10⁻¹⁹ = 2 × 10¹⁶
Related Questions: - Following figures show the arrangement of bar magnets in different configurations
- When aluminium is added as an impurity to silicon, the resulting material is
- Order of e/m ratio of proton, α-particle and electron is
- A police jeep is chasing a culprit going on a motorbike.The motorbike crosses
- If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Following figures show the arrangement of bar magnets in different configurations
- When aluminium is added as an impurity to silicon, the resulting material is
- Order of e/m ratio of proton, α-particle and electron is
- A police jeep is chasing a culprit going on a motorbike.The motorbike crosses
- If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
Topics: Dual Nature of Matter and Radiation (150)
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