Magnetic Force
PHXII04:MOVING CHARGES AND MAGNETISM

362759 The net magnetic force acting on the current carrying loop, kept in uniform magnetic field \({B}\), as shown below is
supporting img

1 \({(5 a+4 b) I B}\)
2 \(5\,BIa\)
3 \(4\,BIb\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362760 A circular coil having mass \(m\) is kept above the ground the (\(x-z\) plane) at some height. The coil carries a current \(i\) in the direction shown in figure. In which direction a uniform magnetic field \(\vec{B}\) be applied so that the magnetic force balances the weight of the coil?
supporting img

1 Negative \(x\)-direction
2 Positive \(z\)-direction
3 Positive \(x\)-direction
4 Not possible to balance
PHXII04:MOVING CHARGES AND MAGNETISM

362761 A wire of \(6.28\,m\) length is converted into two semicircular loops of same radius, as shown in the figure, the magnetic force on wire will now be
supporting img

1 \({1 N}\), towards right
2 \({20 N}\), towards left
3 \({10 N}\), towards right
4 \({20 N}\), towards right
PHXII04:MOVING CHARGES AND MAGNETISM

362762 A wire along \(x\)-axis carries a current 3.5\(A\). The force on a 1\(cm\) section of the wire exerted by the magnetic field \(\bar B = 0.74T\hat j - 0.36T\hat k\)

1 \((2.59\hat k + 1.26\hat j){10^{ - 2}}\;N\)
2 \(( - 1.26\hat k + 2.59\hat j){10^{ - 2}}\;N\)
3 \((1.26\hat k - 2.59\hat j){10^{ - 2}}\;N\)
4 \(( - 2.59\hat k - 1.26\hat j){10^{ - 2}}\;N\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII04:MOVING CHARGES AND MAGNETISM

362759 The net magnetic force acting on the current carrying loop, kept in uniform magnetic field \({B}\), as shown below is
supporting img

1 \({(5 a+4 b) I B}\)
2 \(5\,BIa\)
3 \(4\,BIb\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362760 A circular coil having mass \(m\) is kept above the ground the (\(x-z\) plane) at some height. The coil carries a current \(i\) in the direction shown in figure. In which direction a uniform magnetic field \(\vec{B}\) be applied so that the magnetic force balances the weight of the coil?
supporting img

1 Negative \(x\)-direction
2 Positive \(z\)-direction
3 Positive \(x\)-direction
4 Not possible to balance
PHXII04:MOVING CHARGES AND MAGNETISM

362761 A wire of \(6.28\,m\) length is converted into two semicircular loops of same radius, as shown in the figure, the magnetic force on wire will now be
supporting img

1 \({1 N}\), towards right
2 \({20 N}\), towards left
3 \({10 N}\), towards right
4 \({20 N}\), towards right
PHXII04:MOVING CHARGES AND MAGNETISM

362762 A wire along \(x\)-axis carries a current 3.5\(A\). The force on a 1\(cm\) section of the wire exerted by the magnetic field \(\bar B = 0.74T\hat j - 0.36T\hat k\)

1 \((2.59\hat k + 1.26\hat j){10^{ - 2}}\;N\)
2 \(( - 1.26\hat k + 2.59\hat j){10^{ - 2}}\;N\)
3 \((1.26\hat k - 2.59\hat j){10^{ - 2}}\;N\)
4 \(( - 2.59\hat k - 1.26\hat j){10^{ - 2}}\;N\)
PHXII04:MOVING CHARGES AND MAGNETISM

362759 The net magnetic force acting on the current carrying loop, kept in uniform magnetic field \({B}\), as shown below is
supporting img

1 \({(5 a+4 b) I B}\)
2 \(5\,BIa\)
3 \(4\,BIb\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362760 A circular coil having mass \(m\) is kept above the ground the (\(x-z\) plane) at some height. The coil carries a current \(i\) in the direction shown in figure. In which direction a uniform magnetic field \(\vec{B}\) be applied so that the magnetic force balances the weight of the coil?
supporting img

1 Negative \(x\)-direction
2 Positive \(z\)-direction
3 Positive \(x\)-direction
4 Not possible to balance
PHXII04:MOVING CHARGES AND MAGNETISM

362761 A wire of \(6.28\,m\) length is converted into two semicircular loops of same radius, as shown in the figure, the magnetic force on wire will now be
supporting img

1 \({1 N}\), towards right
2 \({20 N}\), towards left
3 \({10 N}\), towards right
4 \({20 N}\), towards right
PHXII04:MOVING CHARGES AND MAGNETISM

362762 A wire along \(x\)-axis carries a current 3.5\(A\). The force on a 1\(cm\) section of the wire exerted by the magnetic field \(\bar B = 0.74T\hat j - 0.36T\hat k\)

1 \((2.59\hat k + 1.26\hat j){10^{ - 2}}\;N\)
2 \(( - 1.26\hat k + 2.59\hat j){10^{ - 2}}\;N\)
3 \((1.26\hat k - 2.59\hat j){10^{ - 2}}\;N\)
4 \(( - 2.59\hat k - 1.26\hat j){10^{ - 2}}\;N\)
PHXII04:MOVING CHARGES AND MAGNETISM

362759 The net magnetic force acting on the current carrying loop, kept in uniform magnetic field \({B}\), as shown below is
supporting img

1 \({(5 a+4 b) I B}\)
2 \(5\,BIa\)
3 \(4\,BIb\)
4 zero
PHXII04:MOVING CHARGES AND MAGNETISM

362760 A circular coil having mass \(m\) is kept above the ground the (\(x-z\) plane) at some height. The coil carries a current \(i\) in the direction shown in figure. In which direction a uniform magnetic field \(\vec{B}\) be applied so that the magnetic force balances the weight of the coil?
supporting img

1 Negative \(x\)-direction
2 Positive \(z\)-direction
3 Positive \(x\)-direction
4 Not possible to balance
PHXII04:MOVING CHARGES AND MAGNETISM

362761 A wire of \(6.28\,m\) length is converted into two semicircular loops of same radius, as shown in the figure, the magnetic force on wire will now be
supporting img

1 \({1 N}\), towards right
2 \({20 N}\), towards left
3 \({10 N}\), towards right
4 \({20 N}\), towards right
PHXII04:MOVING CHARGES AND MAGNETISM

362762 A wire along \(x\)-axis carries a current 3.5\(A\). The force on a 1\(cm\) section of the wire exerted by the magnetic field \(\bar B = 0.74T\hat j - 0.36T\hat k\)

1 \((2.59\hat k + 1.26\hat j){10^{ - 2}}\;N\)
2 \(( - 1.26\hat k + 2.59\hat j){10^{ - 2}}\;N\)
3 \((1.26\hat k - 2.59\hat j){10^{ - 2}}\;N\)
4 \(( - 2.59\hat k - 1.26\hat j){10^{ - 2}}\;N\)