A Uniform Circular Ring Has Charge Q and Radius R

question 43

Multiple Choice

A uniform circular ring has charge Q and radius r.The magnitude of the electric field at a distance of r along the axis of the ring is E_o.If the radius were to double,then calculate the new electric field at a distance of r along the axis of the ring in terms of E_o.

• A)0.40 E_o
• B)0.25 E_o
• C)0.50 E_o
• D)0.20 E_o
• E)0.089 E_o

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The difference between actual and budgeted overhead costs that is directly manageable or controllable by management.

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Indirect costs of production that are not affected by the volume of production, such as rent, salaries, and utilities.

Materials Price Variance

The difference between the actual cost of materials used in production and the expected (or standard) cost.

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