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CUET UG Physics — practice by topic

Browse 291 questions across 7 Physics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Physics topics

Electromagnetic Induction & Alternating Current (78)Electromagnetic Waves (42)Dual Nature of Radiation and Matter (40)Semiconductor Electronics (40)Moving Charges and Magnetism (38)Current Electricity (36)Nuclei (17)

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An electric current is constituted by:Read the answer and worked solution →Materials that carry current when a field is applied are:Read the answer and worked solution →Ohm's law states that V is proportional to:Read the answer and worked solution →Doubling the length of a conductor makes its resistance:Read the answer and worked solution →

Worked practice questions

An electric current is constituted by:

  1. Charges in motion
  2. Charges at rest
  3. Neutral matter
  4. Empty vacuums
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Correct answer: A. Charges in motion

1. A current needs something to flow. 2. Static charges produce no current at all. 3. Charges in motion constitute an electric current. 4. So the answer is charges in motion. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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Materials that carry current when a field is applied are:

  1. Vacuum gap
  2. Conductors
  3. Insulators
  4. Dielectric
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Correct answer: B. Conductors

1. Some materials have charges free to move. 2. An applied field sets those charges moving. 3. Such materials are called conductors. 4. So the answer is conductors. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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Ohm's law states that V is proportional to:

  1. V
  2. R
  3. T
  4. I
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Correct answer: D. I

1. The law links potential difference with current. 2. Their ratio is the constant R. 3. So V is proportional to I. 4. The answer is I. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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