Select Chapter Topics:

The magnetic energy stored in an inductor of inductance \(4~\mathrm{\mu H}\) carrying a current of \(2\) A is:

1. \(8~\mathrm{\mu J}\)

2. \(4~\mathrm{\mu J}\)

3. \(4~\mathrm{mJ}\)

4. \(8~\mathrm{mJ}\)

1. \(8~\mathrm{\mu J}\)

2. \(4~\mathrm{\mu J}\)

3. \(4~\mathrm{mJ}\)

4. \(8~\mathrm{mJ}\)

Subtopic: Self - Inductance |

70%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

An emf is generated by an ac generator having \(100\) turn coil, of loop area \(1\) m^{2}. The coil rotates at a speed of one revolution per second and placed in a uniform magnetic field of \(0.05\) T perpendicular to the axis of rotation of the coil. The maximum value of emf is:

1. \(3.14\) V

2. \(31.4\) V

3. \(62.8\) V

4. \(6.28\) V

1. \(3.14\) V

2. \(31.4\) V

3. \(62.8\) V

4. \(6.28\) V

Subtopic: Motional emf |

67%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

A square loop of side \(1\) m and resistance \(1\) \(\Omega\) is placed in a magnetic field of \(0.5\) T. If the plane of the loop is perpendicular to the direction of the magnetic field, the magnetic flux through the loop is:

1. \(0\)

2. \(2\) weber

3. \(0.5\) weber

4. \(1\) weber

1. \(0\)

2. \(2\) weber

3. \(0.5\) weber

4. \(1\) weber

Subtopic: Magnetic Flux |

63%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

A big circular coil of \(1000\) turns and average radius \(10\) m is rotating about its horizontal diameter at \(2\) rad s^{-1}. If the vertical component of earth's magnetic field at that place is \(2\times 10^{-5}\) T and electrical resistance of the coil is \(12.56~\Omega,\) then the maximum induced current in the coil will be:

1. \(2\) A

2. \(0.25\) A

3. \(1.5\) A

4. \(1\) A

1. \(2\) A

2. \(0.25\) A

3. \(1.5\) A

4. \(1\) A

Subtopic: Faraday's Law & Lenz Law |

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

The current in an inductor of self-inductance \(4\) H changes from \(4\) A to \(2\) A in \(1\) s. The e.m.f. induced in the coil is:

1. \(-2\) V

2. \(2\) V

3. \(-4\) V

4. \(8\) V

Subtopic: Self - Inductance |

80%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

The dimensions of mutual inductance (M) are:

1. [M^{2}LT^{-2}A^{-2}]

2. [MLT^{-2}A^{2}]

3. [M^{2}L^{2}T^{-2}A^{2}]

4. [ML^{2}T^{-2}A^{-2}]

Subtopic: Mutual Inductance |

69%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

An inductor coil of self-inductance \(10\) H carries a current of \(1\) A. The magnetic field energy stored in the coil is:

1. \(10\) J

2. \(2.5\) J

3. \(20\) J

4. \(5\) J

Subtopic: Self - Inductance |

80%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

The magnetic flux linked to a circular coil of radius \(R\) is;

\(\phi=2t^3+4t^2+2t+5\) Wb.

The magnitude of induced emf in the coil at \(t=5\) s is:

1. \(108\) V

2. \(197\) V

3. \(150\) V

4. \(192\) V

\(\phi=2t^3+4t^2+2t+5\) Wb.

The magnitude of induced emf in the coil at \(t=5\) s is:

1. \(108\) V

2. \(197\) V

3. \(150\) V

4. \(192\) V

Subtopic: Magnetic Flux |

81%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Two conducting circular loops of radii ${\mathrm{R}}_{1}\mathrm{and}{\mathrm{R}}_{2}$ are placed in the same plane with their centres coinciding. If ${\mathrm{R}}_{1}>>{\mathrm{R}}_{2}$, the mutual inductance M between them will be directly proportional to:

1. $\frac{{\mathrm{R}}_{1}^{2}}{{\mathrm{R}}_{2}}$

2. $\frac{{\mathrm{R}}_{2}^{2}}{{\mathrm{R}}_{1}}$

3. $\frac{{\mathrm{R}}_{1}}{{\mathrm{R}}_{2}}$

4. $\frac{{\mathrm{R}}_{2}}{{\mathrm{R}}_{1}}$

Subtopic: Mutual Inductance |

57%

From NCERT

NEET - 2021

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

The magnetic flux linked with a coil (in Wb) is given by the equation \(\phi=5 t^2+3 t+60\). The magnitude of induced emf in the coil at \(t=4\) s will be:

1. \(33\) V

2. \(43\) V

3. \(108\) V

4. \(10\) V

Subtopic: Faraday's Law & Lenz Law |

86%

From NCERT

NEET - 2020

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

Links

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh