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CUET UG Current Electricity — practice questions

Explore 36 free Current Electricity questions in CUET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Current Electricity questions and exercises with answers

Showing questions 1–30 of 36.

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 →Halving the cross-section area of a conductor makes resistance:Read the answer and worked solution →The resistance inside a cell itself is called its:Read the answer and worked solution →Resistance is inversely proportional to the conductor's:Read the answer and worked solution →The average time between electron collisions is called:Read the answer and worked solution →The drift velocity of electrons points:Read the answer and worked solution →Drift velocity is small compared with the electrons':Read the answer and worked solution →Internal resistance of a cell may be neglected when it is:Read the answer and worked solution →Compared with electrolytic cells, dry cells have internal resistance that is:Read the answer and worked solution →Two cells joined can be replaced by one cell of equivalent:Read the answer and worked solution →How many rules did Kirchhoff give for circuit analysis?Read the answer and worked solution →Kirchhoff's junction rule for currents I1, I2 into a junction gives:Read the answer and worked solution →The quantity denoted by sigma, the inverse of resistivity, is:Read the answer and worked solution →Resistance depends on the material and on the conductor's:Read the answer and worked solution →If two identical slabs are joined end to end, the combined resistance is:Read the answer and worked solution →Materials that carry current when a field is applied are:Read the answer and worked solution →If two identical slabs are joined end to end, the combined resistance is:Read the answer and worked solution →An electric current is constituted by: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 →Resistance is inversely proportional to the conductor's:Read the answer and worked solution →The average time between electron collisions is called:Read the answer and worked solution →The drift velocity of electrons points:Read the answer and worked solution →Drift velocity is small compared with the electrons':Read the answer and worked solution →Internal resistance of a cell may be neglected when it is:Read the answer and worked solution →Compared with electrolytic cells, dry cells have internal resistance that is:Read the answer and worked solution →Two cells joined can be replaced by one cell of equivalent: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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