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MasteringPhysics: Print View with Answers

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Part B<br />

Calculate the y-component of the electric field.<br />

Express your answer in terms of the given quantities.<br />

ANSWER:<br />

E y =<br />

Part C<br />

Calculate the z-component of the electric field.<br />

Express your answer in terms of the given quantities.<br />

ANSWER:<br />

E z = 0<br />

Part D<br />

At which point is the electric field equal to zero?<br />

ANSWER:<br />

x = 0 , y = 0 , z = 0<br />

x = −C/A , y = 0 , z = −2BC/A 2<br />

x = −C/A , y = −2BC/<br />

, z = C/A<br />

A 2 a Q<br />

Problem 23.70<br />

Description: A thin insulating rod is bent into a semicircular arc of radius a, and a total electric charge Q is distributed uniformly along the rod. (a)<br />

Calculate the potential at the center of curvature of the arc if the potential is assumed to be zero at...<br />

A thin insulating rod is bent into a semicircular arc of radius , and a total electric charge<br />

is distributed uniformly along the rod.<br />

Part A<br />

Calculate the potential at the center of curvature of the arc if the potential is assumed to be zero at infinity.<br />

Express your answer in terms of the given quantities and appropriate constants.<br />

ANSWER:<br />

V =<br />

Also accepted: ,<br />

Problem 23.79<br />

Description: Electric charge is distributed uniformly along a thin rod of length a, <strong>with</strong> total charge Q. Take the potential to be zero at infinity. Find the<br />

potential at the following points: (the figure ). (a) Find the potential at the point P, a distance x to...<br />

Electric charge is distributed uniformly along a thin rod of length a, <strong>with</strong> total charge Q.<br />

Take the potential to be zero at infinity. Find the potential at the<br />

following points: (the figure ).

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