Force on Moving Charges: a Charge Is Accelerated from Rest

question 11

Multiple Choice

Force on moving charges: A charge is accelerated from rest through a potential difference V and then enters a uniform magnetic field oriented perpendicular to its path. The field deflects the particle into a circular arc of radius R. If the accelerating potential is tripled to 3V, what will be the radius of the circular arc?

• A) 9R
• B) 3R
• C) R
• D) R/
• E) R/9

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Definitions:

Simple Linear Regression

A method in statistics that models the relationship between two variables by fitting a linear equation to the observed data.

Least-squares Regression Line

A straight line that best models the relationship between a dependent and independent variable by minimizing the sum of the squares of the vertical distances of the points from the line.

MPG

Miles Per Gallon, a measure of fuel efficiency used in the United States to indicate how many miles a vehicle can travel per gallon of fuel.

Linear Model

A mathematical model that assumes a linear relationship between the input variables (x) and a single output variable (y), where y can be calculated from a linear combination of the input variables.