Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Current Electricity
0 votes

In a Hydrogen atom, an electron moves in an orbit of radius $5 \times 10^{-11}m$ with a speed of $2.2 \times 10^6 m/s.$ Calculate the equivalent current.

$\begin {array} {1 1} (A)\;1.12mA & \quad (B)\;0.12mA \\ (C)\;1.2mA & \quad (D)\;0.112mA \end {array}$


Can you answer this question?

1 Answer

0 votes
Current = charge flowing per unit time = charge times the angular frequency
It reduces to the following formula
$I = \large\frac{qv}{2 \pi r}$
Substituting the values in the above formula yields the final answer.
Ans : (A)
answered Feb 10, 2014 by thanvigandhi_1
edited Mar 14, 2014 by thanvigandhi_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App