What is the difference between magnetic field and magnetic field lines?

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Magnetic fields and magnetic field lines are related to each other and are used to describe the behaviour and properties of magnetic fields. The main differences between magnetic fields and magnetic field lines are as follows –

Magnetic Field	Magnetic Field Lines
Magnetic field is a vector quantity that describes the strength and direction of the magnetic force on a charged particle or a magnetic material.	Magnetic field lines are a visual representation of the direction and strength of the magnetic field in a given region of space.
Magnetic field is measured in Tesla (T) or Gauss (G).	Magnetic field lines have no units.
Magnetic field is continuous and exists throughout a region of space where a magnetic field is present.	Magnetic field lines are discrete and do not exist outside the region where a magnetic field is present.
Magnetic field lines point in the direction of the magnetic field at any given point in space.	Magnetic field lines are a closed loop that begins and ends on magnetic poles.
The strength of the magnetic field can be calculated at any point in space by measuring the magnetic field vector.	The density of magnetic field lines indicates the strength of the magnetic field, with closer lines indicating a stronger field.
The magnetic field is used to calculate the magnetic force on a charged particle or a magnetic material.	Magnetic field lines are used to visualize and represent the direction and strength of the magnetic field in a given region of space.

In summary, the magnetic field is a mathematical vector that describes the strength and direction of the magnetic force, while magnetic field lines are a visual representation of the magnetic field that provides information on the direction and strength of the magnetic field at different points in space.

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CBSE CLASS XII Related Questions

1.
Nuclides with the same number of neutrons are called:

Isobars
Isotones
Isotopes
Isomers

View Solution

2.
Assertion : In Young’s double-slit experiment, the fringe width for dark and bright fringes is the same. Reason (R): Fringe width is given by \( \beta = \frac{\lambda D}{d} \), where symbols have their usual meanings.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Both Assertion (A) and Reason (R) are false.

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3.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

attract with a force \( \frac{F}{2} \)
repel with a force \( \frac{F}{2} \)
repel with a force \( F \)
attract with a force \( F \)

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4.
A circular coil of 100 turns and radius \( \left(\frac{10}{\sqrt{\pi}}\right) \, \text{cm}\) carrying current of \( 5.0 \, \text{A} \) is suspended vertically in a uniform horizontal magnetic field of \( 2.0 \, \text{T} \). The field makes an angle \( 30^\circ \) with the normal to the coil. Calculate:
the magnetic dipole moment of the coil, and
the magnitude of the counter torque that must be applied to prevent the coil from turning.

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5.
A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

5 V
3.5 V
2.5 V
Zero V

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6.
The energy of an electron in an orbit in hydrogen atom is \( -3.4 \, \text{eV} \). Its angular momentum in the orbit will be:

\( \dfrac{3h}{2\pi} \)
\( \dfrac{2h}{\pi} \)
\( \dfrac{h}{\pi} \)
\( \dfrac{h}{2\pi} \)

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What is the difference between magnetic field and magnetic field lines?

CBSE CLASS XII Related Questions

1.
Nuclides with the same number of neutrons are called:

2.
Assertion : In Young’s double-slit experiment, the fringe width for dark and bright fringes is the same. Reason (R): Fringe width is given by \( \beta = \frac{\lambda D}{d} \), where symbols have their usual meanings.

3.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

5.
A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

6.
The energy of an electron in an orbit in hydrogen atom is \( -3.4 \, \text{eV} \). Its angular momentum in the orbit will be:

Similar Physics Concepts

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What is the difference between magnetic field and magnetic field lines?

CBSE CLASS XII Related Questions

1.Nuclides with the same number of neutrons are called:

2.Assertion : In Young’s double-slit experiment, the fringe width for dark and bright fringes is the same. Reason (R): Fringe width is given by \( \beta = \frac{\lambda D}{d} \), where symbols have their usual meanings.

3.Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

5.A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

6.The energy of an electron in an orbit in hydrogen atom is \( -3.4 \, \text{eV} \). Its angular momentum in the orbit will be:

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Nuclides with the same number of neutrons are called:

2.
Assertion : In Young’s double-slit experiment, the fringe width for dark and bright fringes is the same. Reason (R): Fringe width is given by \( \beta = \frac{\lambda D}{d} \), where symbols have their usual meanings.

3.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

5.
A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

6.
The energy of an electron in an orbit in hydrogen atom is \( -3.4 \, \text{eV} \). Its angular momentum in the orbit will be: