PH 102 Midterm: PH102_S07_Exam1_formA

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turquoisegnu128

31 Jan 2019

School

University of Alabama

Department

Course

PH 102

Professor

All

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Document Summary

Ph 102 exam i: a free electron and a free proton are placed in an identical electric eld. 2. 0 m - r23: three point charges lie along the x axis, as shown at left. A positive charge q1 = 15 c is at x = 2 m, and a positive charge of q2 = 6 c is at the origin. Where must a negative charge q3 be placed on the x-axis such that the resulting electric force on it is zero? q2 q3. 1c: a point charge q is located at the center of a (non-conducting) spherical shell of radius a that has a charge. What is the electric eld for all points outside the spherical shell? (cid:13) none of these (cid:13) e = 0 (cid:13) e = q/4 r2 (cid:13) e = kq/r2 (cid:13) e = kq2/r2. The electric potential is taken to be zero at in nity.

Related Questions

Review. Two parallel plates having charges of equal magnitude but opposite sign are separated by 12.0 cm. Each plate has a surface charge density of 36.0 nC/m². A proton is released from rest at the positive plate. Determine

(a) the magnitude of the electric field between the plates from the charge density

(b) the potential difference between the plates

(d) the speed of the proton just before it strikes the negative plate

(e) the acceleration of the proton

(f) the force on the proton

(g) From the force, find the magnitude of the electric field.

(h) How does your value of the electric field compare with that found in part (a)?