A Square Wire, 20 Cm on the Side, Moves at Constant

question 78

Multiple Choice

A square wire, 20 cm on the side, moves at constant speed parallel to the xy-plane into a region where there is a uniform magnetic field = (0.1 T) .The induced electric current in the coil is 10 mA and its resistance is 10Ω. What is the speed of the wire?

• A)0.5 m/s
• B)10 m/s
• C)20 m/s
• D)5 m/s
• E)1 m/s

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Definitions:

Machine-Hours

A measure of production output or activity calculated as the total hours that machines are operated over a specific period.

Standard Hours Allowed

The amount of work time allowed for the completion of a task, against which actual hours are compared for performance analysis.

Direct Labor-Hours

Total time directly invested in the creation of a product or the provision of a service.

Variable Overhead Efficiency Variance

A measure used to evaluate the efficiency of variable overhead resources used in production relative to the standard consumption expected.