Start learning →

NEET UG Moving Charges and Magnetism — practice questions — page 5

Explore 180 free Moving Charges and Magnetism questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Moving Charges and Magnetism with Quill →

Moving Charges and Magnetism questions and exercises with answers

Showing questions 121–150 of 180.

What the cyclotron frequency ignoresRead the answer and worked solution →A long straight wire carries $5$ A. The magnetic field $0.10$ m away from the wire is:Read the answer and worked solution →Depends on speed or notRead the answer and worked solution →Symbol to quantityRead the answer and worked solution →Currents make fieldsRead the answer and worked solution →A positive charge moves with velocity $\vec{v}$ PARALLEL to a uniform magnetic field $\vec{B}$. The magnetic force on it isRead the answer and worked solution →The magnetic field at the CENTRE of a circular current loop of radius $R$ carrying current $I$ isRead the answer and worked solution →A current loop of area $A$ carrying current $I$ has a MAGNETIC MOMENT of magnitudeRead the answer and worked solution →Reading the Lorentz forceRead the answer and worked solution →Force on a current wireRead the answer and worked solution →The current carrying conductorRead the answer and worked solution →The cyclotron machineRead the answer and worked solution →Formula to what it describesRead the answer and worked solution →Using Biot-SavartRead the answer and worked solution →Odd one out: magnetismRead the answer and worked solution →Which is largerRead the answer and worked solution →Odd one out: what a current doesRead the answer and worked solution →Zero work, changing directionRead the answer and worked solution →Moving charges, mixed checkRead the answer and worked solution →The Lorentz forceRead the answer and worked solution →Charge in a uniform fieldRead the answer and worked solution →Count and computeRead the answer and worked solution →Field of a circular coilRead the answer and worked solution →NEET · Physics · Right-Hand RulesRead the answer and worked solution →Complete the magnet ruleRead the answer and worked solution →Sort the magnetic materialsRead the answer and worked solution →Order what happens to domainsRead the answer and worked solution →Substances that are weakly magnetised in a field are:Read the answer and worked solution →A ferromagnet is divided internally into regions called:Read the answer and worked solution →In an unmagnetised ferromagnet, the domains are:Read the answer and worked solution →

Worked practice questions

What the cyclotron frequency ignores

Read exercise and reference answers
Questions
  1. Statement is true
    Yes
    Statement
    The cyclotron frequency is independent of the particle's speed.
  2. Statement is true
    Yes
    Statement
    It is independent of the orbit radius.
  3. Statement is true
    Yes
    Statement
    It depends on the charge and the field.
  4. Statement is true
    No
    Statement
    A faster particle always has a higher cyclotron frequency.
Instructions
Tap True or False for each statement.
_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

Open this exercise →

A long straight wire carries $5$ A. The magnetic field $0.10$ m away from the wire is:

  1. $1.0\times 10^{-5}$ T, by $B = \mu_0 I/(2\pi r)$
  2. $5\times 10^{-7}$ T, ignoring the $2\pi$ factor here
  3. $1.0$ T, ignoring all scaling on the formula
  4. Zero, since the wire is straight, not coiled
Show answer and solution

Correct answer: A. $1.0\times 10^{-5}$ T, by $B = \mu_0 I/(2\pi r)$

$B = 4\pi\times 10^{-7}\cdot 5/(2\pi\cdot 0.1) = 1.0\times 10^{-5}$ T.

Open this question →

Depends on speed or not

Read exercise and reference answers
Left
Depends on speed
Items
  1. Item
    Cyclotron freq.
    Answer
    Independent of speed
  2. Item
    Magnetic force
    Answer
    Depends on speed
  3. Item
    Orbit radius
    Answer
    Depends on speed
  4. Item
    qB over 2 pi m
    Answer
    Independent of speed
  5. Item
    v cross B term
    Answer
    Depends on speed
  6. Item
    Charge to mass
    Answer
    Independent of speed
Right
Independent of speed
Instructions
Swipe the card right or left into its group.
_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

Open this exercise →

How to practise

  1. Choose a Moving Charges and Magnetism 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.

Put it into practice

Continue with Moving Charges and Magnetism practice for NEET UG. Read explanations as you go. No signup form needed to start.

Practise Moving Charges and Magnetism →

More Physics topics

Electric Charges and FieldsRay Optics and Optical InstrumentsSemiconductor ElectronicsCurrent ElectricityDual Nature of Radiation and MatterKinetic Theory & OscillationsSystem of Particles and Rotational MotionThermal Properties of Matter & Thermodynamics