Biot-Savart Law
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PHXII04:MOVING CHARGES AND MAGNETISM

362574 Two concentric coils each of radius equal to \(2 \pi\) \(cm\) are placed right angles to each other. If 3\(A\) and 4\(A\) are the currents flowing through the two coils respectively. The magnetic induction (in \(Wb{m^{ - 2}}\) ) at the centre of the coils will be

1 \(10^{-5}\)
2 \(7 \times 10^{-5}\)
3 \(12 \times 10^{-5}\)
4 \(5 \times 10^{-5}\)
KCET - 2015
PHXII04:MOVING CHARGES AND MAGNETISM

362575 A tightly wound 100 turns coil of radius \(10\,cm\) carries a current of \(7\,A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \({4 \pi \times 10^{-7} S I}\) units):

1 \(44\,mT\)
2 \(4.4\,T\)
3 \(4.4\,mT\)
4 \(44\,T\)
NEET - 2024
PHXII04:MOVING CHARGES AND MAGNETISM

362576 Assertion :
The magnetic field intensity at the centre of a circular coil carrying current changes, if the current through the coil is doubled.
Reason :
The magnetic field intensity does not depend on radius of coil.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362577 Shown in the figure is a conductor carrying a current ' \({I}\) '.
supporting img
The magnetic field intensity at the common centre of all the three arcs (point \(O\)) is

1 \({\dfrac{5 \mu_{0} I \theta}{24 \pi r}}\)
2 \({\dfrac{\mu_{0} I \theta}{24 \pi r}}\)
3 \({\dfrac{11 \mu_{0} I \theta}{24 \pi r}}\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362578 A circular coil carrying a certain current produces a magnetic field \({B_0}\) at its centre. The coil is now rewound so as to have 3 turns and the same curent is passed through it. The new magnetic field at the centre is

1 \({B_0}/9\)
2 \(9\;{B_0}\)
3 \({B_0}/3\)
4 \(3\;{B_0}\)
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PHXII04:MOVING CHARGES AND MAGNETISM

362574 Two concentric coils each of radius equal to \(2 \pi\) \(cm\) are placed right angles to each other. If 3\(A\) and 4\(A\) are the currents flowing through the two coils respectively. The magnetic induction (in \(Wb{m^{ - 2}}\) ) at the centre of the coils will be

1 \(10^{-5}\)
2 \(7 \times 10^{-5}\)
3 \(12 \times 10^{-5}\)
4 \(5 \times 10^{-5}\)
KCET - 2015
PHXII04:MOVING CHARGES AND MAGNETISM

362575 A tightly wound 100 turns coil of radius \(10\,cm\) carries a current of \(7\,A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \({4 \pi \times 10^{-7} S I}\) units):

1 \(44\,mT\)
2 \(4.4\,T\)
3 \(4.4\,mT\)
4 \(44\,T\)
NEET - 2024
PHXII04:MOVING CHARGES AND MAGNETISM

362576 Assertion :
The magnetic field intensity at the centre of a circular coil carrying current changes, if the current through the coil is doubled.
Reason :
The magnetic field intensity does not depend on radius of coil.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362577 Shown in the figure is a conductor carrying a current ' \({I}\) '.
supporting img
The magnetic field intensity at the common centre of all the three arcs (point \(O\)) is

1 \({\dfrac{5 \mu_{0} I \theta}{24 \pi r}}\)
2 \({\dfrac{\mu_{0} I \theta}{24 \pi r}}\)
3 \({\dfrac{11 \mu_{0} I \theta}{24 \pi r}}\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362578 A circular coil carrying a certain current produces a magnetic field \({B_0}\) at its centre. The coil is now rewound so as to have 3 turns and the same curent is passed through it. The new magnetic field at the centre is

1 \({B_0}/9\)
2 \(9\;{B_0}\)
3 \({B_0}/3\)
4 \(3\;{B_0}\)
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PHXII04:MOVING CHARGES AND MAGNETISM

362574 Two concentric coils each of radius equal to \(2 \pi\) \(cm\) are placed right angles to each other. If 3\(A\) and 4\(A\) are the currents flowing through the two coils respectively. The magnetic induction (in \(Wb{m^{ - 2}}\) ) at the centre of the coils will be

1 \(10^{-5}\)
2 \(7 \times 10^{-5}\)
3 \(12 \times 10^{-5}\)
4 \(5 \times 10^{-5}\)
KCET - 2015
PHXII04:MOVING CHARGES AND MAGNETISM

362575 A tightly wound 100 turns coil of radius \(10\,cm\) carries a current of \(7\,A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \({4 \pi \times 10^{-7} S I}\) units):

1 \(44\,mT\)
2 \(4.4\,T\)
3 \(4.4\,mT\)
4 \(44\,T\)
NEET - 2024
PHXII04:MOVING CHARGES AND MAGNETISM

362576 Assertion :
The magnetic field intensity at the centre of a circular coil carrying current changes, if the current through the coil is doubled.
Reason :
The magnetic field intensity does not depend on radius of coil.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362577 Shown in the figure is a conductor carrying a current ' \({I}\) '.
supporting img
The magnetic field intensity at the common centre of all the three arcs (point \(O\)) is

1 \({\dfrac{5 \mu_{0} I \theta}{24 \pi r}}\)
2 \({\dfrac{\mu_{0} I \theta}{24 \pi r}}\)
3 \({\dfrac{11 \mu_{0} I \theta}{24 \pi r}}\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362578 A circular coil carrying a certain current produces a magnetic field \({B_0}\) at its centre. The coil is now rewound so as to have 3 turns and the same curent is passed through it. The new magnetic field at the centre is

1 \({B_0}/9\)
2 \(9\;{B_0}\)
3 \({B_0}/3\)
4 \(3\;{B_0}\)
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PHXII04:MOVING CHARGES AND MAGNETISM

362574 Two concentric coils each of radius equal to \(2 \pi\) \(cm\) are placed right angles to each other. If 3\(A\) and 4\(A\) are the currents flowing through the two coils respectively. The magnetic induction (in \(Wb{m^{ - 2}}\) ) at the centre of the coils will be

1 \(10^{-5}\)
2 \(7 \times 10^{-5}\)
3 \(12 \times 10^{-5}\)
4 \(5 \times 10^{-5}\)
KCET - 2015
PHXII04:MOVING CHARGES AND MAGNETISM

362575 A tightly wound 100 turns coil of radius \(10\,cm\) carries a current of \(7\,A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \({4 \pi \times 10^{-7} S I}\) units):

1 \(44\,mT\)
2 \(4.4\,T\)
3 \(4.4\,mT\)
4 \(44\,T\)
NEET - 2024
PHXII04:MOVING CHARGES AND MAGNETISM

362576 Assertion :
The magnetic field intensity at the centre of a circular coil carrying current changes, if the current through the coil is doubled.
Reason :
The magnetic field intensity does not depend on radius of coil.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362577 Shown in the figure is a conductor carrying a current ' \({I}\) '.
supporting img
The magnetic field intensity at the common centre of all the three arcs (point \(O\)) is

1 \({\dfrac{5 \mu_{0} I \theta}{24 \pi r}}\)
2 \({\dfrac{\mu_{0} I \theta}{24 \pi r}}\)
3 \({\dfrac{11 \mu_{0} I \theta}{24 \pi r}}\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362578 A circular coil carrying a certain current produces a magnetic field \({B_0}\) at its centre. The coil is now rewound so as to have 3 turns and the same curent is passed through it. The new magnetic field at the centre is

1 \({B_0}/9\)
2 \(9\;{B_0}\)
3 \({B_0}/3\)
4 \(3\;{B_0}\)
Join With Us for More Updates
PHXII04:MOVING CHARGES AND MAGNETISM

362574 Two concentric coils each of radius equal to \(2 \pi\) \(cm\) are placed right angles to each other. If 3\(A\) and 4\(A\) are the currents flowing through the two coils respectively. The magnetic induction (in \(Wb{m^{ - 2}}\) ) at the centre of the coils will be

1 \(10^{-5}\)
2 \(7 \times 10^{-5}\)
3 \(12 \times 10^{-5}\)
4 \(5 \times 10^{-5}\)
KCET - 2015
PHXII04:MOVING CHARGES AND MAGNETISM

362575 A tightly wound 100 turns coil of radius \(10\,cm\) carries a current of \(7\,A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \({4 \pi \times 10^{-7} S I}\) units):

1 \(44\,mT\)
2 \(4.4\,T\)
3 \(4.4\,mT\)
4 \(44\,T\)
NEET - 2024
PHXII04:MOVING CHARGES AND MAGNETISM

362576 Assertion :
The magnetic field intensity at the centre of a circular coil carrying current changes, if the current through the coil is doubled.
Reason :
The magnetic field intensity does not depend on radius of coil.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362577 Shown in the figure is a conductor carrying a current ' \({I}\) '.
supporting img
The magnetic field intensity at the common centre of all the three arcs (point \(O\)) is

1 \({\dfrac{5 \mu_{0} I \theta}{24 \pi r}}\)
2 \({\dfrac{\mu_{0} I \theta}{24 \pi r}}\)
3 \({\dfrac{11 \mu_{0} I \theta}{24 \pi r}}\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362578 A circular coil carrying a certain current produces a magnetic field \({B_0}\) at its centre. The coil is now rewound so as to have 3 turns and the same curent is passed through it. The new magnetic field at the centre is

1 \({B_0}/9\)
2 \(9\;{B_0}\)
3 \({B_0}/3\)
4 \(3\;{B_0}\)