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Tamil Nadu HSC (Class 12) Electrostatics — practice questions — page 2

Explore 49 free Electrostatics questions in Tamil Nadu HSC (Class 12) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Electrostatics questions and exercises with answers

Showing questions 31–49 of 49.

Constants and magnitudesRead the answer and worked solution →True or false: the superposition principleRead the answer and worked solution →Complete the definition of electric fieldRead the answer and worked solution →Which way does the field point?Read the answer and worked solution →True or false: electric field linesRead the answer and worked solution →Match each term to its definitionRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Tap every statement true of Coulomb's lawRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Order the steps: net force on one charge among manyRead the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Mobile chargesRead the answer and worked solution →True or false: fields and forcesRead the answer and worked solution →Assertion and reason: fieldsRead the answer and worked solution →Vector or scalar?Read the answer and worked solution →Complete the conservation statementRead the answer and worked solution →Tap every property your syllabus lists for electric chargeRead the answer and worked solution →

Worked practice questions

Constants and magnitudes

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Questions
  1. Question
    The approximate value of k is
    Choices
    1. 8.854 × 10⁻¹² N m² C⁻²
    2. 6.67 × 10⁻¹¹ N m² C⁻²
    3. 9 × 10⁹ N m² C⁻²
    Correct choice
    9 × 10⁹ N m² C⁻²
  2. Question
    The SI unit of charge is the
    Choices
    1. coulomb
    2. newton
    3. volt
    Correct choice
    coulomb
  3. Question
    The ratio of electric to gravitational force between proton and electron is about
    Choices
    1. 9 × 10⁹
    2. 2.4 × 10³⁹
    3. 8.854 × 10⁻¹²
    Correct choice
    2.4 × 10³⁹
  4. Question
    k equals
    Choices
    1. 4πε₀
    2. ε₀
    3. 1/(4πε₀)
    Correct choice
    1/(4πε₀)
The values syllabus prints in the summary. Source: syllabus Physics Part I, Ch 1 Electric Charges and Fields.

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True or false: the superposition principle

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Questions
  1. Statement is true
    Yes
    Statement
    The force between two charges is unaffected by a third charge.
  2. Statement is true
    Yes
    Statement
    The net force on a charge is the vector sum of the pairwise forces.
  3. Statement is true
    No
    Statement
    Forces should be added as plain numbers, ignoring direction.
  4. Statement is true
    Yes
    Statement
    Each pairwise force is still given by Coulomb's law.
  5. Statement is true
    Yes
    Statement
    The electric field also obeys superposition.
Superposition works because a third charge does not alter the force between the original two. Source: syllabus Physics Part I, Ch 1 Electric Charges and Fields.

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Complete the definition of electric field

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Missing parts
  1. Answer
    force
    Choices
    1. force
    2. energy
    3. potential
  2. Answer
    positive
    Choices
    1. positive
    2. negative
    3. neutral
  3. Answer
    magnitude
    Choices
    1. magnitude
    2. sign
    3. mass
Complete the statement
The electric field at a point is the {0} on a small {1} test charge placed there, divided by the {2} of that charge.
The field is defined by what it does to a small positive test charge. Source: syllabus Physics Part I, Ch 1 Electric Charges and Fields.

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