mat-sln-asn-effldchk - x axis(d The Feld points into or...

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Solution for Lab Quiz 4 Electric Field Checkup Solution to Lab Quiz Problem 4.1(Total Charge From Field Map) Problem: The feld map below is drawn using Four lines per Q . What is the total charge (including sign) oF the system? Select One oF the ±ollowing: (a) 0 (b-Answer) + Q (c) Q (d) +3 Q (e) 3 Q Solution ±our lines escape to infnity, so the total charge oF the system is + Q . 1
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Total Points for Problem: 1 Points Solution to Lab Quiz Problem 4.2(Far from System of Point Charges Field Radial with Total Charge of Distribution) 2
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Problem: Consider the sys- tem of charges drawn to the right. Two charges with charge + q and 2 q are placed near the origin, 1cm apart on the y axis. What is the direction of the Feld at a point P a distance 1m along the x axis? Select One of the ±ollowing: (a-Answer) The Feld points approximately along the x axis, ei- ther in the positive or negative direction. (b) The Feld points ap- proximately along the y axis, either in the pos- itive or negative direc- tion. (c) The Feld points along a line at an angle of about 30 degrees to the
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Unformatted text preview: x axis. (d) The Feld points into or out-of the page. x y +q-2q 3 Solution Far from a charge distribution, the ±eld lines become radial (point straight outward), and behave as if coming from a point charge with the total charge of the distribution. Total Points for Problem: 3 Points Solution to Lab Quiz Problem 4.3(Correct Dipole Drawing) Problem: The ±gures below show a dipole in a electric ±eld of a point charge. Which ±gure correctly captures the direction and magnitudes of the forces on the dipole? Select One of the Following: (a-Answer) Figure (a) (b) Figure (b) (c) Figure (c) (d) Figure (d) 4 +Q + _ (a) +Q + _ (b) +Q + _ (c) +Q + _ (d) Solution 5 The feld must point in the di-rection oF the feld line and is stronger where the feld lines are closer together. The Force should be larger where the feld lines are closer together, so fgure (a) is correct. +Q + _ (a) Total Points for Problem: 3 Points 6...
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This note was uploaded on 03/29/2010 for the course PHYS 2469 taught by Professor Stewat during the Spring '10 term at University of Arkansas Community College at Batesville.

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mat-sln-asn-effldchk - x axis(d The Feld points into or...

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