Force on Current-Carrying Conductor

  • Thread starter Thread starter cocololo
  • Start date Start date
  • Tags Tags
    Conductor Force
AI Thread Summary
To find the radius of a proton moving in a magnetic field, the relevant equation is F = Bqv, where F is the magnetic force, B is the magnetic field strength, q is the charge, and v is the velocity. The magnetic force acts as the centripetal force, allowing for the calculation of the radius by equating the two forces. The discussion highlights a common misunderstanding regarding the complexity of the problem, with participants clarifying the straightforward application of the formula. The solution involves recognizing that the magnetic force points toward the center of the circular path. This approach simplifies the process of determining the radius of the proton's circular motion.
cocololo
Messages
2
Reaction score
0

Homework Statement



A proton (q = 1.6 x 10-19C; m = 1.7 x 10-27 kg) is in a uniform 0.25 T magnetic field. The proton moves in a clockwise circle with a tangential speed of 2.8 x 105 m/s.

What is the radius of the circle?

Homework Equations



Not sure what equation to use.

The Attempt at a Solution



We had been learning about magnitude of a magnetic field, and the equation we were working with was B=Fmagnetic/qV, I wasn't sure how to use this to find radius.
 
Physics news on Phys.org
Hi cocololo. Yes you can use the equation F=Bqv, which is the force due to the magnetic field which always points towards the centre of the circle so you can equate the magnetic force to the centripetal force and you should be able to workout the radius from that.
 
Oh, of course! I think I was thinking way too hard about this looking for something way more complicated than it actually was. Thanks!
 
You're welcome. Anything else you need help with?
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Electric Field Force Exerted Vertically
Replies
9
Views
8K
Magnetic energy of a conductor with a hole
Replies
1
Views
1K
Magnetic forces on current-carrying wires
Replies
43
Views
3K
Charge density and charge on a conductor
Replies
15
Views
4K
What is the radius of curvature for a proton moving in a magnetic field?
Replies
5
Views
5K
Increase in kinetic energy in current carrying conductor
Replies
2
Views
1K
Does a Bent Wire Affect Induction Calculations?
Replies
7
Views
2K
Charged sphere and charged conducting shell
Replies
9
Views
3K
Cyclotron Radius of Proton: .625m
Replies
3
Views
2K
Solving Two Charged Plates Homework: Magnetism, Frequency & Charge Density
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top