Start learning →

Indian Navy INET Electromagnetism — practice questions

Explore 25 free Electromagnetism questions in Indian Navy INET Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Electromagnetism with Quill →

Electromagnetism questions and exercises with answers

Showing questions 1–25 of 25.

Magnetic field inside a long solenoid (n turns per unit length, current I):Read the answer and worked solution →In a velocity selector, electric field E and magnetic field B are perpendicular. Velocity of particles passing undeflected:Read the answer and worked solution →Complete the work-energy theoremRead the answer and worked solution →True or false: conservative forcesRead the answer and worked solution →Conservative or not?Read the answer and worked solution →Reading the theoremRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Tap every test for a conservative forceRead the answer and worked solution →Order the reasoning: from work to speedRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: energy bookkeepingRead the answer and worked solution →Speeds up, slows down, or neither?Read the answer and worked solution →Applying the work-energy theoremRead the answer and worked solution →True or false: potential energyRead the answer and worked solution →Kinetic or potential?Read the answer and worked solution →Tap every statement true of a closed pathRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: energyRead the answer and worked solution →Complete the potential energy relationRead the answer and worked solution →Flip and pair: quantity with what it tracksRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Order the reasoning: why a pendulum keeps swingingRead the answer and worked solution →Conservative or not, in practiceRead the answer and worked solution →

Worked practice questions

Magnetic field inside a long solenoid (n turns per unit length, current I):

  1. μ₀ I
  2. μ₀ n I
  3. μ₀ I / n
  4. 2 μ₀ n I
Show answer and solution

Correct answer: B. μ₀ n I

**For ideal long solenoid:** B = μ₀ n I (uniform inside, zero outside). Independent of position. Used to create uniform magnetic fields in labs.

Open this question →

In a velocity selector, electric field E and magnetic field B are perpendicular. Velocity of particles passing undeflected:

  1. E/B
  2. B/E
  3. EB
  4. E²/B
Show answer and solution

Correct answer: A. E/B

**For undeflected motion:** electric force qE balances magnetic force qvB. So v = E/B. Only particles with this specific speed pass straight others are deflected. Used in mass spectrometers.

Open this question →

Complete the work-energy theorem

Read exercise and reference answers
Missing parts
  1. Answer
    kinetic
    Choices
    1. kinetic
    2. potential
    3. thermal
  2. Answer
    net
    Choices
    1. net
    2. frictional
    3. gravitational
Complete the statement
The work-energy theorem states that the change in {0} energy of a body equals the work done by the {1} force on it.
One sentence links work to a change in energy. Source: syllabus Physics, Ch 5 Work, Energy and Power.

Open this exercise →

How to practise

  1. Choose a Electromagnetism question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Physics topics

Work and EnergyPhysics and MeasurementWork and PowerC9kineticenergyOpticsWorkenergyEnergy Transfer in SystemsPotential and Kinetic Energy