Electric Field of Multiple Point-Charges: the Figure Shows Three Electric

question 35

Multiple Choice

Electric field of multiple point-charges: The figure shows three electric charges labeled Q₁, Q₂, Q₃, and some electric field lines in the region surrounding the charges. What are the signs of the three charges?

• A) Q₁ is positive, Q₂ is negative, Q₃ is positive.
• B) Q₁ is negative, Q₂ is positive, Q₃ is negative.
• C) Q₁ is positive, Q₂ is positive, Q₃ is negative.
• D) All three charges are negative.
• E) All three charges are positive.

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Definitions:

Efficient Retention

The ability to effectively and accurately remember and recall information over periods of time.

Hindsight Bias

The tendency to believe, after learning an outcome, that one would have foreseen it, often referred to as the "I-knew-it-all-along" effect.

Placebo Effect

A phenomenon where an improvement in health or wellbeing is observed after receiving a treatment that has no therapeutic value, due to the individual's belief in its efficacy.

Illusory Correlation

refers to the cognitive bias where a relationship between two variables is perceived to exist when no such relationship actually exists.