The Experiments of Faraday and Henry
PHXII06:ELECTROMAGNETIC INDUCTION

358727 The magnetic flux \({\phi}\) through a metal ring varies with time \({t}\) according to \({\phi=3\left(a t^{3}-b t^{2}\right) T m^{2}}\) with \({a=2 s^{-3}}\) and \({b=6 s^{-2}}\). The resistance of the ring is \({3 \Omega}\). The maximum current induced in the ring during the interval \({t=0}\) to \({t=2 {~s}}\) is

1 \({1 A}\)
2 \({2 A}\)
3 \({3 A}\)
4 \({6 A}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358728 In case of a closed circuit of \(10 \Omega\) resistance, the change of flux \(\phi\) with respect to time \(t\) is given by the equation \(\phi=2 t^{2}-5 t-1\), the current at \(t = 0.25\;s\) will be:

1 \(4\;A\)
2 \(0.04\;A\)
3 \(0.4\;A\)
4 \(1\;A\)
PHXII06:ELECTROMAGNETIC INDUCTION

358729 Consider the situation given in figure. The wire \(A B\) is sliding on the fixed rails with a constant velocity. If the wire \(A B\) is replaced by a semicircular wire, the magnitude of the induced current will
supporting img

1 Decrease
2 Increase
3 Increase or decrease depending on whether the semicircle bulges towards the resistanceor away from it
4 Remain same
PHXII06:ELECTROMAGNETIC INDUCTION

358730 A rod of length \(2\;m\) slides with a speed of \(5\;m\;{s^{ - 1}}\) on a rectangular conducting frame as shown in figure. There exists a uniform magnetic field of \(0.04\;T\) perpendicular to the plane of the figure. If the resistance of the rod is \(3 \Omega\). The current through the rod is
supporting img

1 \(0.75\;A\)
2 \(1.33\;A\)
3 \(75\;mA\)
4 \(133\;mA\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII06:ELECTROMAGNETIC INDUCTION

358727 The magnetic flux \({\phi}\) through a metal ring varies with time \({t}\) according to \({\phi=3\left(a t^{3}-b t^{2}\right) T m^{2}}\) with \({a=2 s^{-3}}\) and \({b=6 s^{-2}}\). The resistance of the ring is \({3 \Omega}\). The maximum current induced in the ring during the interval \({t=0}\) to \({t=2 {~s}}\) is

1 \({1 A}\)
2 \({2 A}\)
3 \({3 A}\)
4 \({6 A}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358728 In case of a closed circuit of \(10 \Omega\) resistance, the change of flux \(\phi\) with respect to time \(t\) is given by the equation \(\phi=2 t^{2}-5 t-1\), the current at \(t = 0.25\;s\) will be:

1 \(4\;A\)
2 \(0.04\;A\)
3 \(0.4\;A\)
4 \(1\;A\)
PHXII06:ELECTROMAGNETIC INDUCTION

358729 Consider the situation given in figure. The wire \(A B\) is sliding on the fixed rails with a constant velocity. If the wire \(A B\) is replaced by a semicircular wire, the magnitude of the induced current will
supporting img

1 Decrease
2 Increase
3 Increase or decrease depending on whether the semicircle bulges towards the resistanceor away from it
4 Remain same
PHXII06:ELECTROMAGNETIC INDUCTION

358730 A rod of length \(2\;m\) slides with a speed of \(5\;m\;{s^{ - 1}}\) on a rectangular conducting frame as shown in figure. There exists a uniform magnetic field of \(0.04\;T\) perpendicular to the plane of the figure. If the resistance of the rod is \(3 \Omega\). The current through the rod is
supporting img

1 \(0.75\;A\)
2 \(1.33\;A\)
3 \(75\;mA\)
4 \(133\;mA\)
PHXII06:ELECTROMAGNETIC INDUCTION

358727 The magnetic flux \({\phi}\) through a metal ring varies with time \({t}\) according to \({\phi=3\left(a t^{3}-b t^{2}\right) T m^{2}}\) with \({a=2 s^{-3}}\) and \({b=6 s^{-2}}\). The resistance of the ring is \({3 \Omega}\). The maximum current induced in the ring during the interval \({t=0}\) to \({t=2 {~s}}\) is

1 \({1 A}\)
2 \({2 A}\)
3 \({3 A}\)
4 \({6 A}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358728 In case of a closed circuit of \(10 \Omega\) resistance, the change of flux \(\phi\) with respect to time \(t\) is given by the equation \(\phi=2 t^{2}-5 t-1\), the current at \(t = 0.25\;s\) will be:

1 \(4\;A\)
2 \(0.04\;A\)
3 \(0.4\;A\)
4 \(1\;A\)
PHXII06:ELECTROMAGNETIC INDUCTION

358729 Consider the situation given in figure. The wire \(A B\) is sliding on the fixed rails with a constant velocity. If the wire \(A B\) is replaced by a semicircular wire, the magnitude of the induced current will
supporting img

1 Decrease
2 Increase
3 Increase or decrease depending on whether the semicircle bulges towards the resistanceor away from it
4 Remain same
PHXII06:ELECTROMAGNETIC INDUCTION

358730 A rod of length \(2\;m\) slides with a speed of \(5\;m\;{s^{ - 1}}\) on a rectangular conducting frame as shown in figure. There exists a uniform magnetic field of \(0.04\;T\) perpendicular to the plane of the figure. If the resistance of the rod is \(3 \Omega\). The current through the rod is
supporting img

1 \(0.75\;A\)
2 \(1.33\;A\)
3 \(75\;mA\)
4 \(133\;mA\)
PHXII06:ELECTROMAGNETIC INDUCTION

358727 The magnetic flux \({\phi}\) through a metal ring varies with time \({t}\) according to \({\phi=3\left(a t^{3}-b t^{2}\right) T m^{2}}\) with \({a=2 s^{-3}}\) and \({b=6 s^{-2}}\). The resistance of the ring is \({3 \Omega}\). The maximum current induced in the ring during the interval \({t=0}\) to \({t=2 {~s}}\) is

1 \({1 A}\)
2 \({2 A}\)
3 \({3 A}\)
4 \({6 A}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358728 In case of a closed circuit of \(10 \Omega\) resistance, the change of flux \(\phi\) with respect to time \(t\) is given by the equation \(\phi=2 t^{2}-5 t-1\), the current at \(t = 0.25\;s\) will be:

1 \(4\;A\)
2 \(0.04\;A\)
3 \(0.4\;A\)
4 \(1\;A\)
PHXII06:ELECTROMAGNETIC INDUCTION

358729 Consider the situation given in figure. The wire \(A B\) is sliding on the fixed rails with a constant velocity. If the wire \(A B\) is replaced by a semicircular wire, the magnitude of the induced current will
supporting img

1 Decrease
2 Increase
3 Increase or decrease depending on whether the semicircle bulges towards the resistanceor away from it
4 Remain same
PHXII06:ELECTROMAGNETIC INDUCTION

358730 A rod of length \(2\;m\) slides with a speed of \(5\;m\;{s^{ - 1}}\) on a rectangular conducting frame as shown in figure. There exists a uniform magnetic field of \(0.04\;T\) perpendicular to the plane of the figure. If the resistance of the rod is \(3 \Omega\). The current through the rod is
supporting img

1 \(0.75\;A\)
2 \(1.33\;A\)
3 \(75\;mA\)
4 \(133\;mA\)