Two Long Straight Parallel Lines,#1 and #2,carry Uniform Positive Linear

question 2

Multiple Choice

Two long straight parallel lines,#1 and #2,carry uniform positive linear charge densities.The charge density on line #2 is twice as great as the charge density on line #1.The locus of points where the electric field due to these lines is zero is

• A) along a line between the lines closer to line #2 than line #1.
• B) at a point midway between the lines.
• C) along a line perpendicular to lines #1 and #2.
• D) along a line between the lines closer to line #1 than line #2.

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Secondary Immune Response

The response of the immune system upon its second or subsequent exposure to a specific antigen, typically faster and more vigorous than the primary response.

Primary Immune Response

The initial response of the immune system to a foreign antigen, characterized by the activation and proliferation of immune cells.

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The first encounter or introduction to a stimulus, substance, or environment which may influence subsequent responses.