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An electron revolves in a circle at the rate of 10¹⁹ rounds per second. The equivalent current is (e=1.6×10⁻¹⁹C)
Options
(a) 1.0A
(b) 0.2A
(c) 0.1A
(d) 2.0A
Correct Answer:
0.2A
Explanation:
Current I = qf
Given, q = 16 × 10⁻¹⁹ C and f = 10¹⁹
Therefore, I = 1.6 A
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- The work function of metals is in the range of 2 eV to 5 eV.
- A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The first line in Lyman series has wavelength λ. The wavelength
- The work function of metals is in the range of 2 eV to 5 eV.
- A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
- If the length of a stretched string is shortened by 4% and the tension is increased
- The area of cross-section of a steel wire (Y=2.0×10¹¹ N/m²) is 0.1 cm².
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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