Using the Right-Hand Rule or y, x B, indicate the direction of the magnetic forc

Question

Using the Right-Hand Rule or y, x B, indicate the direction of the magnetic force on the charge as it enters the magnetic field as indicated in the Fig-3 below: 1) Up. 2) Down. 3) Out of the page, and 4) Into the page. 5) No force and 6) No direction. Calculate the net magnetic field at O for the current-carry ing wire segment shown in the Fig-4. The wire consists of two straight portions and a circular arc of radius R = 5.0 cm, which subtends an angle theta = pi/6, and carries a current of 2.0 A. The arrowheads on the wire indicate the direction of the current. The wire carries a current of 2.0A.

Explanation / Answer

13. (a) up

(b) into the page

(c) down

(d) out of the page

14. B = mu0I*(theta)/4*pi*r = 10^-7*2*pi/6/0.05 =15.7 T...............Ans.

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