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CG PET Moving Charges and Magnetism — practice questions — page 2

Explore 46 free Moving Charges and Magnetism questions in CG PET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Moving Charges and Magnetism questions and exercises with answers

Showing questions 31–46 of 46.

The cyclotron machineRead the answer and worked solution →Formula to what it describesRead the answer and worked solution →The Biot-Savart lawRead the answer and worked solution →Using Biot-SavartRead the answer and worked solution →Field of a circular coilRead the answer and worked solution →Odd one out: magnetismRead the answer and worked solution →Depends on speed or notRead the answer and worked solution →True of the magnetic forceRead the answer and worked solution →Symbol to quantityRead the answer and worked solution →Which is largerRead the answer and worked solution →Field and force directionsRead the answer and worked solution →Currents make fieldsRead the answer and worked solution →Count and computeRead 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 →

Worked practice questions

The cyclotron machine

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Missing parts
  1. Answer
    radius
    Choices
    1. radius
    2. charge
    3. field
  2. Answer
    accelerate
    Choices
    1. accelerate
    2. cool
    3. store
Complete the statement
The cyclotron exploits a frequency that is independent of speed and {0}, and is used to {1} charged particles.
Instructions
Tap a chip from the bank to fill each blank.
_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

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Formula to what it describes

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Matching pairs
  1. Left
    F = q(vxB + E)
    Right
    The Lorentz force
  2. Left
    F = I l x B
    Right
    Force on a current carrying wire
  3. Left
    qB over 2 pi m
    Right
    Cyclotron frequency
  4. Left
    Biot-Savart
    Right
    Field from a current element
Instructions
Tap a formula, then tap its match.
_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

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The Biot-Savart law

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Questions
  1. Question
    Biot-Savart gives the field due to a
    Choices
    1. Static charge
    2. Current element
    3. Magnet pole
    Correct choice
    Current element
  2. Question
    The field dB depends on the element
    Choices
    1. dt
    2. dq
    3. dl
    Correct choice
    dl
  3. Question
    It falls off with distance as
    Choices
    1. 1 over r cubed in the vector form
    2. r squared
    3. Linearly
    Correct choice
    1 over r cubed in the vector form
  4. Question
    To get the total field you must
    Choices
    1. Take one point only
    2. Integrate over the conductor
    3. Divide by length
    Correct choice
    Integrate over the conductor
Instructions
Tap the chip that answers each prompt.
_Source: syllabus Physics Part 1, Ch 4 'Moving Charges and Magnetism' (leph104)_

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