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Indian Navy INET Magnetic Effects of Electric Current — practice questions

Explore 5 free Magnetic Effects of Electric Current questions in Indian Navy INET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Magnetic Effects of Electric Current questions and exercises with answers

Showing questions 1–5 of 5.

CLASS10 · Physics · Magnetic Effect — Quick True/FalseRead the answer and worked solution →Magnetic field lines around a straight current-carrying wire are:Read the answer and worked solution →A current-carrying solenoid behaves like which of the following?Read the answer and worked solution →Two parallel wires carry currents in the SAME direction. They:Read the answer and worked solution →To convert an AC generator into DC generatorRead the answer and worked solution →

Worked practice questions

CLASS10 · Physics · Magnetic Effect — Quick True/False

Read exercise and reference answers
Questions
  1. Statement is true
    Yes
    Statement
    A current-carrying conductor produces a magnetic field around it.
  2. Statement is true
    Yes
    Statement
    Magnetic field lines are closed curves.
  3. Statement is true
    No
    Statement
    Inside a solenoid, the field is non-uniform and weak.
  4. Statement is true
    Yes
    Statement
    The direction of induced EMF is given by Fleming's right-hand rule.
  5. Statement is true
    Yes
    Statement
    AC generators and motors use the same fundamental physics.
  6. Statement is true
    No
    Statement
    Earth's magnetic field is unrelated to a freely suspended bar magnet's orientation.
Instructions
Decide each electromagnetism statement.

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Magnetic field lines around a straight current-carrying wire are:

  1. Straight lines parallel to the wire
  2. Concentric circles around the wire
  3. Random and disordered
  4. Radial lines pointing outward
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Correct answer: B. Concentric circles around the wire

1. A straight current-carrying conductor produces a magnetic field in the surrounding space. 2. Iron filings sprinkled around the wire arrange themselves in concentric circles. 3. The centre of each circle lies on the wire itself. 4. So the field lines form concentric circles around the wire. _Source: syllabus Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_

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A current-carrying solenoid behaves like which of the following?

  1. A horseshoe magnet
  2. A bar magnet
  3. A point charge
  4. A capacitor
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Correct answer: B. A bar magnet

1. A solenoid is a coil of insulated wire with many turns. 2. When current flows, each turn produces a circular magnetic field. 3. The combined field is uniform inside and looks like a bar magnet outside. 4. One end of the solenoid acts as the north pole, the other as the south. 5. So a current-carrying solenoid behaves like a bar magnet. 6. Horseshoe magnets have a U-shape and bend their field differently. _Source: syllabus Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_

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