FIGURE 23-7 -A Bar Magnet with Its North Pole Pointing Toward a Pointing

question 84

Multiple Choice

FIGURE 23-7
-A bar magnet with its north pole pointing toward a coil of wire with a cross-sectional area of 0.020 m² and seven turns is thrust into the coil as shown in Figure 23-7(b) . If the rate of change in the strength of the magnetic field caused by the motion of the bar magnet is 0.040 T/s, what is the direction of the induced emf in the coil of wire (when looking at the end of the coil where the N pole is coming toward you) ?

• A) counterclockwise
• B) clockwise
• C) No emf is induced.

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Definitions:

Normal Quantile Plot

A graphical method for assessing whether or not a data set is approximately normally distributed.

Residuals

The differences between observed values and the values predicted by a model, used in regression analysis to assess the fit of the model.

Regression Model

A statistical model used to understand the relationship between one dependent variable and one or more independent variables.

Multiple Linear Regression

A method in statistics that establishes the connection between one dependent variable and multiple independent variables by applying a linear equation to the data collected.