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NEET UG Current Electricity — practice questions — page 6

Explore 163 free Current Electricity questions in NEET 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 151–163 of 163.

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 →Complete Ohm's lawRead 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 →Halving the cross-section area of a conductor makes resistance:Read the answer and worked solution →Tap what affects resistanceRead the answer and worked solution →NEET · Physics · Kirchhoff's LawsRead the answer and worked solution →The resistance inside a cell itself is called its:Read the answer and worked solution →Current electricity numbersRead the answer and worked solution →

Worked practice questions

Internal resistance of a cell may be neglected when it is:

  1. Much bigger
  2. Exactly equal
  3. Always zero
  4. Much smaller
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Correct answer: D. Much smaller

1. The internal resistance sits in series with the circuit. 2. Its effect matters only in proportion to the rest. 3. It may be neglected when it is much smaller than the external one. 4. So the answer is much smaller. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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Compared with electrolytic cells, dry cells have internal resistance that is:

  1. Much higher
  2. Much lower
  3. Exactly same
  4. Always zero
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Correct answer: A. Much higher

1. Internal resistance varies from cell to cell. 2. The two types differ markedly. 3. Dry cells have much higher internal resistance. 4. So the answer is much higher. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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Two cells joined can be replaced by one cell of equivalent:

  1. Length and area
  2. Emf and resistance
  3. Charge and voltage
  4. Current and power
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Correct answer: B. Emf and resistance

1. The pair behaves like a single source from outside. 2. Both its driving force and its internal loss combine. 3. So it is replaced by one cell of equivalent emf and resistance. 4. The answer is emf and resistance. _Source: syllabus Physics, Ch 3 'Current Electricity'_

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