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AP Intermediate 2nd Year Moving Charges and Magnetism — practice questions — page 6

Explore 188 free Moving Charges and Magnetism questions in AP Intermediate 2nd Year 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 151–180 of 188.

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 →Above a certain temperature, a ferromagnet becomes a:Read the answer and worked solution →The Earth's magnetic field runs approximately from geographic:Read the answer and worked solution →Inside a diamagnetic material, the field is:Read the answer and worked solution →Diamagnetism arises in atoms whose electrons have no net:Read the answer and worked solution →The magnetic moment of a bar magnet equals that of an equivalent:Read the answer and worked solution →A bar magnet behaves like a magnetic:Read the answer and worked solution →Inside a long solenoid carrying current $I$ with $n$ turns per unit length, the magnetic field isRead the answer and worked solution →A $50$-turn coil has a magnetic flux changing through it at a uniform rate of $4 \times 10^{-3}\,\text{Wb/s}$. The induced EMF in the coil is:Read the answer and worked solution →Field lines of a bar magnet differ from an electric dipole's because they:Read the answer and worked solution →Substances that are strongly magnetised in a field are:Read the answer and worked solution →Cutting a bar magnet in half gives:Read the answer and worked solution →A bar magnet can be modelled as a large number of:Read the answer and worked solution →Spot the odd one outRead the answer and worked solution →Name the magnetic classRead the answer and worked solution →Lenz's law is a direct consequence of:Read the answer and worked solution →The energy stored in an inductor of inductance $L$ carrying a steady current $I$ is:Read the answer and worked solution →An ideal LC circuit oscillates freely. If $L = 4\,\text{mH}$ and $C = 25\,\mu\text{F}$, the angular frequency of oscillation is:Read the answer and worked solution →True or false about magnetsRead the answer and worked solution →Magnetism and matter bingoRead the answer and worked solution →A bar magnet with N pole pointing right is placed near a circular current loop whose magnetic moment also points right. The interaction isRead the answer and worked solution →The Biot-Savart lawRead the answer and worked solution →The magnitude of the magnetic field at perpendicular distance r from an infinite straight wire carrying current I isRead the answer and worked solution →True of the magnetic forceRead the answer and worked solution →The SI unit Henry (H) is equivalent to:Read the answer and worked solution →Field and force directionsRead the answer and worked solution →Applying a field makes the domains:Read the answer and worked solution →Substances repelled by a magnetic field are:Read the answer and worked solution →A freely suspended bar magnet settles pointing:Read the answer and worked solution →

Worked practice questions

A ferromagnet is divided internally into regions called:

  1. Lattices
  2. Sectors
  3. Domains
  4. Circuits
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Correct answer: C. Domains

1. Each region has its own net magnetisation. 2. They point in different directions when unmagnetised. 3. These regions are called domains. 4. So the answer is domains. _Source: syllabus Physics, Ch 5 'Magnetism and Matter'_

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In an unmagnetised ferromagnet, the domains are:

  1. Perfectly aligned
  2. Completely absent
  3. Electrically charg
  4. Randomly oriented
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Correct answer: D. Randomly oriented

1. Each domain is magnetised on its own. 2. Their directions cancel out across the sample. 3. So the domains are randomly oriented. 4. The answer is randomly oriented. _Source: syllabus Physics, Ch 5 'Magnetism and Matter'_

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Above a certain temperature, a ferromagnet becomes a:

  1. Conductor
  2. Paramagnet
  3. Diamagnet
  4. Superfluid
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Correct answer: B. Paramagnet

1. Heat disrupts the cooperative domain structure. 2. The strong response is then lost. 3. The ferromagnet becomes a paramagnet. 4. So the answer is paramagnet. _Source: syllabus Physics, Ch 5 'Magnetism and Matter'_

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