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Jharkhand Board Class 12 (JAC) Electric Charges and Fields — practice questions

Explore 30 free Electric Charges and Fields questions in Jharkhand Board Class 12 (JAC) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Electric Charges and Fields questions and exercises with answers

Showing questions 1–30 of 30.

Amber rubbed with fur gains electrons, so the amber ends up:Read the answer and worked solution →The fur that has rubbed amber has lost electrons, so it becomes:Read the answer and worked solution →Before rubbing, both the amber and the cloth were electrically:Read the answer and worked solution →A physicist records a charge in SI units, named after a French scientist. That unit is the:Read the answer and worked solution →Electric charge comes only in discrete amounts, which means charge is:Read the answer and worked solution →A macroscopic object becomes charged because electrons have been added or:Read the answer and worked solution →The rule that charge is never created or destroyed is the law of:Read the answer and worked solution →An atom that has gained or lost electrons and now carries a net charge is called an:Read the answer and worked solution →The particle with no electric charge but nearly the mass of a proton is the:Read the answer and worked solution →Loosely held electrons that wander freely through copper are called:Read the answer and worked solution →Materials that lack free electrons and resist the flow of charge are called:Read the answer and worked solution →A charged rod brought near a neutral conductor rearranges its charges. This is called:Read the answer and worked solution →A molecule with its positive and negative ends separated forms an electric:Read the answer and worked solution →Charging an object without ever touching it with the charged rod is charging by:Read the answer and worked solution →In charging by induction, the earth is used because the ground is a good:Read the answer and worked solution →After charging another object by induction, the charged rod loses:Read the answer and worked solution →The rule that the force from one charge is unaffected by other charges present is the principle of:Read the answer and worked solution →The quantity defined so that it does not depend on the test charge used is the electric:Read the answer and worked solution →Electric field lines start on positive charges and end on:Read the answer and worked solution →A charge of 2q is drawn with how many times as many field lines as a charge of q?Read the answer and worked solution →Two electric field lines can never:Read the answer and worked solution →Where field lines are drawn close together, the magnitude of the field is:Read the answer and worked solution →Catch the insulatorsRead the answer and worked solution →Pop the charge factsRead the answer and worked solution →Run the charge gatesRead the answer and worked solution →Slice the electricity termsRead the answer and worked solution →Conductor or insulatorRead the answer and worked solution →Sort the electric ideasRead the answer and worked solution →Type the numberRead the answer and worked solution →Charges bingoRead the answer and worked solution →

Worked practice questions

Amber rubbed with fur gains electrons, so the amber ends up:

  1. Negatively charged
  2. Positively charged
  3. Perfectly neutral
  4. Partially melted
Show answer and solution

Correct answer: A. Negatively charged

1. Electrons carry negative charge. 2. Gaining them leaves a surplus of negative charge. 3. So the amber is negatively charged. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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The fur that has rubbed amber has lost electrons, so it becomes:

  1. Partially melted
  2. Positively charged
  3. Negatively charged
  4. Perfectly neutral
Show answer and solution

Correct answer: B. Positively charged

1. Losing electrons leaves protons unbalanced. 2. The surplus is then positive. 3. So the fur is positively charged. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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Before rubbing, both the amber and the cloth were electrically:

  1. Neutral
  2. Negative
  3. Positive
  4. Magnetic
Show answer and solution

Correct answer: A. Neutral

1. Each held equal positive and negative charge. 2. The two cancelled exactly. 3. So both were neutral. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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