Average current by particle moving in circle

AI Thread Summary
To find the average current produced by a charged particle moving in a circular orbit, the key is to determine the period of revolution based on the angular speed. The particle's angular speed is given as 100 π rad/s, which allows calculation of the time for one complete revolution. Using the charge of 8 nC, the average current can be calculated using the formula Q = I.t. The final answer for the average current is determined to be 0.4 μA. This approach effectively combines angular motion with electrical charge flow to solve the problem.
songoku
Messages
2,467
Reaction score
382

Homework Statement


A particle having charge 8 nC moves in circular orbit with angular speed of 100 π rad/s. Find the average current produced!
a. 0.2 μA
b. 0.3 μA
c. 0.4 μA
d. 0.5 μA
e. 0.6 μA

Homework Equations


Q = I.t

The Attempt at a Solution


The equation I can think of is Q = I.t. I don't know how to find t and I also don't know what the use of angular speed in this question.

Thanks
 
Physics news on Phys.org
The particle is traveling in a circle with a given angular frequency. How often does it pass a given point in its "orbit"?
 
  • Like
Likes songoku
At the given angular velocity, how long does the particle need to make one revolution?
How much charge flows when the particle makes one revolution?
 
  • Like
Likes songoku
I get it. I find the period then it's the time. The answer is C

Thanks a lot
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top