A Beam of Electrons Is Accelerated Through a Potential Difference

question 5

Multiple Choice

A beam of electrons is accelerated through a potential difference of 10 kV before entering a region having uniform electric and magnetic fields that are perpendicular to each other and perpendicular to the direction in which the electron is moving.If the magnetic field in this region has a value of 0.010 T,what magnitude of the electric field is required if the particles are to be undeflected as they pass through the region?

• A) 2.3 × 10³ V/m
• B) 7.9 × 10³ V/m
• C) 5.9 × 10⁵ V/m
• D) 6.0 × 10⁵ V/m
• E) 7.2 × 10⁶ V/m

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Definitions:

Selection Differences

Variations in the characteristics of participants in different groups of an experiment due to non-random assignment.

Serious Flaw

pertains to a significant error or shortcoming in design, methodology, or interpretation that can undermine the reliability, validity, or integrity of a research study or argument.

Participant Dropouts

Individuals who withdraw from a study or experiment before it is completed, affecting the validity of the results.

Nonequivalent Control Group Design

A quasi-experimental design where the experimental group and the control group are not created by random assignment, potentially leading to differences between groups that are not due to the experimental manipulation.