Torque & Magnetic Dipole
PHXII04:MOVING CHARGES AND MAGNETISM

363006 A current loop placed in a magnetic field behaves like a

1 Magnetic dipole
2 Magnetic substance
3 Magnetic pole
4 Non magnetic substance
PHXII04:MOVING CHARGES AND MAGNETISM

363007 Current is flowing in a wire frame kept as shown in the figure where \(EDCF\) is in \(y-z\) plane and \(A F C B\) is in \(x-z\) plane. Current in the wire frame is \(i\) and length of each side is \(a\). The magnetic moment of loop is
supporting img

1 \(-i a^{2}(\hat{j}+\hat{k})\)
2 \(-i a^{2}(\hat{i}+\hat{j})\)
3 \(-i a^{2}(-\hat{j}+\hat{k})\)
4 \(-i a^{2}(\hat{k})\)
PHXII04:MOVING CHARGES AND MAGNETISM

363008 Assertion :
A planar circular loop of area \(A\) and carrying current \(I\) is equivalent to magnetic dipole.
Reason :
At large distances, magnetic field of circular loop and magnetic dipole is same.

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

363009 Calculate the magnetic moment (in \({{Am}^{2}}\) ) of a thin wire with a current \({I=8 {~A}}\), wound tightly on a half a tore (see figure). The diameter of the cross section of the tore is equal to \({d=5 {~cm}}\), and the number of turns is \({N=500}\).
supporting img

1 \(1\,A{m^2}\)
2 \(5\,A{m^2}\)
3 \(4\,A{m^2}\)
4 \(7\,A{m^2}\)
PHXII04:MOVING CHARGES AND MAGNETISM

363010 Assertion :
When radius of circular loop carrying current is doubled its magnetic moment becomes four times.
Reason :
Magnetic moment is inversely proportional to on area of the loop.

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

363006 A current loop placed in a magnetic field behaves like a

1 Magnetic dipole
2 Magnetic substance
3 Magnetic pole
4 Non magnetic substance
PHXII04:MOVING CHARGES AND MAGNETISM

363007 Current is flowing in a wire frame kept as shown in the figure where \(EDCF\) is in \(y-z\) plane and \(A F C B\) is in \(x-z\) plane. Current in the wire frame is \(i\) and length of each side is \(a\). The magnetic moment of loop is
supporting img

1 \(-i a^{2}(\hat{j}+\hat{k})\)
2 \(-i a^{2}(\hat{i}+\hat{j})\)
3 \(-i a^{2}(-\hat{j}+\hat{k})\)
4 \(-i a^{2}(\hat{k})\)
PHXII04:MOVING CHARGES AND MAGNETISM

363008 Assertion :
A planar circular loop of area \(A\) and carrying current \(I\) is equivalent to magnetic dipole.
Reason :
At large distances, magnetic field of circular loop and magnetic dipole is same.

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

363009 Calculate the magnetic moment (in \({{Am}^{2}}\) ) of a thin wire with a current \({I=8 {~A}}\), wound tightly on a half a tore (see figure). The diameter of the cross section of the tore is equal to \({d=5 {~cm}}\), and the number of turns is \({N=500}\).
supporting img

1 \(1\,A{m^2}\)
2 \(5\,A{m^2}\)
3 \(4\,A{m^2}\)
4 \(7\,A{m^2}\)
PHXII04:MOVING CHARGES AND MAGNETISM

363010 Assertion :
When radius of circular loop carrying current is doubled its magnetic moment becomes four times.
Reason :
Magnetic moment is inversely proportional to on area of the loop.

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

363006 A current loop placed in a magnetic field behaves like a

1 Magnetic dipole
2 Magnetic substance
3 Magnetic pole
4 Non magnetic substance
PHXII04:MOVING CHARGES AND MAGNETISM

363007 Current is flowing in a wire frame kept as shown in the figure where \(EDCF\) is in \(y-z\) plane and \(A F C B\) is in \(x-z\) plane. Current in the wire frame is \(i\) and length of each side is \(a\). The magnetic moment of loop is
supporting img

1 \(-i a^{2}(\hat{j}+\hat{k})\)
2 \(-i a^{2}(\hat{i}+\hat{j})\)
3 \(-i a^{2}(-\hat{j}+\hat{k})\)
4 \(-i a^{2}(\hat{k})\)
PHXII04:MOVING CHARGES AND MAGNETISM

363008 Assertion :
A planar circular loop of area \(A\) and carrying current \(I\) is equivalent to magnetic dipole.
Reason :
At large distances, magnetic field of circular loop and magnetic dipole is same.

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

363009 Calculate the magnetic moment (in \({{Am}^{2}}\) ) of a thin wire with a current \({I=8 {~A}}\), wound tightly on a half a tore (see figure). The diameter of the cross section of the tore is equal to \({d=5 {~cm}}\), and the number of turns is \({N=500}\).
supporting img

1 \(1\,A{m^2}\)
2 \(5\,A{m^2}\)
3 \(4\,A{m^2}\)
4 \(7\,A{m^2}\)
PHXII04:MOVING CHARGES AND MAGNETISM

363010 Assertion :
When radius of circular loop carrying current is doubled its magnetic moment becomes four times.
Reason :
Magnetic moment is inversely proportional to on area of the loop.

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

363006 A current loop placed in a magnetic field behaves like a

1 Magnetic dipole
2 Magnetic substance
3 Magnetic pole
4 Non magnetic substance
PHXII04:MOVING CHARGES AND MAGNETISM

363007 Current is flowing in a wire frame kept as shown in the figure where \(EDCF\) is in \(y-z\) plane and \(A F C B\) is in \(x-z\) plane. Current in the wire frame is \(i\) and length of each side is \(a\). The magnetic moment of loop is
supporting img

1 \(-i a^{2}(\hat{j}+\hat{k})\)
2 \(-i a^{2}(\hat{i}+\hat{j})\)
3 \(-i a^{2}(-\hat{j}+\hat{k})\)
4 \(-i a^{2}(\hat{k})\)
PHXII04:MOVING CHARGES AND MAGNETISM

363008 Assertion :
A planar circular loop of area \(A\) and carrying current \(I\) is equivalent to magnetic dipole.
Reason :
At large distances, magnetic field of circular loop and magnetic dipole is same.

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

363009 Calculate the magnetic moment (in \({{Am}^{2}}\) ) of a thin wire with a current \({I=8 {~A}}\), wound tightly on a half a tore (see figure). The diameter of the cross section of the tore is equal to \({d=5 {~cm}}\), and the number of turns is \({N=500}\).
supporting img

1 \(1\,A{m^2}\)
2 \(5\,A{m^2}\)
3 \(4\,A{m^2}\)
4 \(7\,A{m^2}\)
PHXII04:MOVING CHARGES AND MAGNETISM

363010 Assertion :
When radius of circular loop carrying current is doubled its magnetic moment becomes four times.
Reason :
Magnetic moment is inversely proportional to on area of the loop.

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

363006 A current loop placed in a magnetic field behaves like a

1 Magnetic dipole
2 Magnetic substance
3 Magnetic pole
4 Non magnetic substance
PHXII04:MOVING CHARGES AND MAGNETISM

363007 Current is flowing in a wire frame kept as shown in the figure where \(EDCF\) is in \(y-z\) plane and \(A F C B\) is in \(x-z\) plane. Current in the wire frame is \(i\) and length of each side is \(a\). The magnetic moment of loop is
supporting img

1 \(-i a^{2}(\hat{j}+\hat{k})\)
2 \(-i a^{2}(\hat{i}+\hat{j})\)
3 \(-i a^{2}(-\hat{j}+\hat{k})\)
4 \(-i a^{2}(\hat{k})\)
PHXII04:MOVING CHARGES AND MAGNETISM

363008 Assertion :
A planar circular loop of area \(A\) and carrying current \(I\) is equivalent to magnetic dipole.
Reason :
At large distances, magnetic field of circular loop and magnetic dipole is same.

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

363009 Calculate the magnetic moment (in \({{Am}^{2}}\) ) of a thin wire with a current \({I=8 {~A}}\), wound tightly on a half a tore (see figure). The diameter of the cross section of the tore is equal to \({d=5 {~cm}}\), and the number of turns is \({N=500}\).
supporting img

1 \(1\,A{m^2}\)
2 \(5\,A{m^2}\)
3 \(4\,A{m^2}\)
4 \(7\,A{m^2}\)
PHXII04:MOVING CHARGES AND MAGNETISM

363010 Assertion :
When radius of circular loop carrying current is doubled its magnetic moment becomes four times.
Reason :
Magnetic moment is inversely proportional to on area of the loop.

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.