2 force on a current carrying conductor and magnetic field
3 induced emf and rate of change of flux
4 magnetic force and electrostatic force
Explanation:
According to Faraday's law, induced emf \({\varepsilon=-\dfrac{d \phi}{d t}}\) where \({\phi=}\) magnetic flux and negative sign indicates that induced emf opposes the cause that produces it, this is Lenz's law. So correct option is (3)
PHXII06:ELECTROMAGNETIC INDUCTION
358663
Direction of current induced in a wire moving in a magnetic field is found using
1 Fleming's left hand rule
2 Fleming's right hand rule
3 Ampere's rule
4 Right hand clasp rule
Explanation:
Direction of current induced in a wire moving in a magnetic field is found by using Fleming's right hand rule.
KCET - 2012
PHXII06:ELECTROMAGNETIC INDUCTION
358664
A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper. The magnetic field is increasing at a constant rate. The directions of induced currents in wires \(AB\) and \(CD\) are
Consider the given loop as two triangular loops. The bigger loop dominates as its emf contribution is more to the net emf. As field is increasing the current in bigger loop is from \(D\) to \(C\) so the net current is smaller loop is from \(B\) to \(A\).
PHXII06:ELECTROMAGNETIC INDUCTION
358665
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
1 Variable
2 Clockwise
3 Anticlockwise
4 Zero
Explanation:
When an electron is moving from right to left, the flux linked with loop (which is out of the page) will first increase and then decrease as the electron passes by :
So the induced current \({I_i}\) in the loop will be first clockwise and will change direction (i.e. will become anticlockwise) as the electron passes by, so as to oppose the change in magnetic flux through the coil.
KCET - 2009
PHXII06:ELECTROMAGNETIC INDUCTION
358666
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two coils the electric current will
1 Remain unchanged
2 Increase
3 Decrease
4 The information is incomplete
Explanation:
Induced current in both the coil assist the main current so current through each coil increases.
2 force on a current carrying conductor and magnetic field
3 induced emf and rate of change of flux
4 magnetic force and electrostatic force
Explanation:
According to Faraday's law, induced emf \({\varepsilon=-\dfrac{d \phi}{d t}}\) where \({\phi=}\) magnetic flux and negative sign indicates that induced emf opposes the cause that produces it, this is Lenz's law. So correct option is (3)
PHXII06:ELECTROMAGNETIC INDUCTION
358663
Direction of current induced in a wire moving in a magnetic field is found using
1 Fleming's left hand rule
2 Fleming's right hand rule
3 Ampere's rule
4 Right hand clasp rule
Explanation:
Direction of current induced in a wire moving in a magnetic field is found by using Fleming's right hand rule.
KCET - 2012
PHXII06:ELECTROMAGNETIC INDUCTION
358664
A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper. The magnetic field is increasing at a constant rate. The directions of induced currents in wires \(AB\) and \(CD\) are
Consider the given loop as two triangular loops. The bigger loop dominates as its emf contribution is more to the net emf. As field is increasing the current in bigger loop is from \(D\) to \(C\) so the net current is smaller loop is from \(B\) to \(A\).
PHXII06:ELECTROMAGNETIC INDUCTION
358665
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
1 Variable
2 Clockwise
3 Anticlockwise
4 Zero
Explanation:
When an electron is moving from right to left, the flux linked with loop (which is out of the page) will first increase and then decrease as the electron passes by :
So the induced current \({I_i}\) in the loop will be first clockwise and will change direction (i.e. will become anticlockwise) as the electron passes by, so as to oppose the change in magnetic flux through the coil.
KCET - 2009
PHXII06:ELECTROMAGNETIC INDUCTION
358666
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two coils the electric current will
1 Remain unchanged
2 Increase
3 Decrease
4 The information is incomplete
Explanation:
Induced current in both the coil assist the main current so current through each coil increases.
2 force on a current carrying conductor and magnetic field
3 induced emf and rate of change of flux
4 magnetic force and electrostatic force
Explanation:
According to Faraday's law, induced emf \({\varepsilon=-\dfrac{d \phi}{d t}}\) where \({\phi=}\) magnetic flux and negative sign indicates that induced emf opposes the cause that produces it, this is Lenz's law. So correct option is (3)
PHXII06:ELECTROMAGNETIC INDUCTION
358663
Direction of current induced in a wire moving in a magnetic field is found using
1 Fleming's left hand rule
2 Fleming's right hand rule
3 Ampere's rule
4 Right hand clasp rule
Explanation:
Direction of current induced in a wire moving in a magnetic field is found by using Fleming's right hand rule.
KCET - 2012
PHXII06:ELECTROMAGNETIC INDUCTION
358664
A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper. The magnetic field is increasing at a constant rate. The directions of induced currents in wires \(AB\) and \(CD\) are
Consider the given loop as two triangular loops. The bigger loop dominates as its emf contribution is more to the net emf. As field is increasing the current in bigger loop is from \(D\) to \(C\) so the net current is smaller loop is from \(B\) to \(A\).
PHXII06:ELECTROMAGNETIC INDUCTION
358665
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
1 Variable
2 Clockwise
3 Anticlockwise
4 Zero
Explanation:
When an electron is moving from right to left, the flux linked with loop (which is out of the page) will first increase and then decrease as the electron passes by :
So the induced current \({I_i}\) in the loop will be first clockwise and will change direction (i.e. will become anticlockwise) as the electron passes by, so as to oppose the change in magnetic flux through the coil.
KCET - 2009
PHXII06:ELECTROMAGNETIC INDUCTION
358666
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two coils the electric current will
1 Remain unchanged
2 Increase
3 Decrease
4 The information is incomplete
Explanation:
Induced current in both the coil assist the main current so current through each coil increases.
2 force on a current carrying conductor and magnetic field
3 induced emf and rate of change of flux
4 magnetic force and electrostatic force
Explanation:
According to Faraday's law, induced emf \({\varepsilon=-\dfrac{d \phi}{d t}}\) where \({\phi=}\) magnetic flux and negative sign indicates that induced emf opposes the cause that produces it, this is Lenz's law. So correct option is (3)
PHXII06:ELECTROMAGNETIC INDUCTION
358663
Direction of current induced in a wire moving in a magnetic field is found using
1 Fleming's left hand rule
2 Fleming's right hand rule
3 Ampere's rule
4 Right hand clasp rule
Explanation:
Direction of current induced in a wire moving in a magnetic field is found by using Fleming's right hand rule.
KCET - 2012
PHXII06:ELECTROMAGNETIC INDUCTION
358664
A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper. The magnetic field is increasing at a constant rate. The directions of induced currents in wires \(AB\) and \(CD\) are
Consider the given loop as two triangular loops. The bigger loop dominates as its emf contribution is more to the net emf. As field is increasing the current in bigger loop is from \(D\) to \(C\) so the net current is smaller loop is from \(B\) to \(A\).
PHXII06:ELECTROMAGNETIC INDUCTION
358665
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
1 Variable
2 Clockwise
3 Anticlockwise
4 Zero
Explanation:
When an electron is moving from right to left, the flux linked with loop (which is out of the page) will first increase and then decrease as the electron passes by :
So the induced current \({I_i}\) in the loop will be first clockwise and will change direction (i.e. will become anticlockwise) as the electron passes by, so as to oppose the change in magnetic flux through the coil.
KCET - 2009
PHXII06:ELECTROMAGNETIC INDUCTION
358666
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two coils the electric current will
1 Remain unchanged
2 Increase
3 Decrease
4 The information is incomplete
Explanation:
Induced current in both the coil assist the main current so current through each coil increases.
2 force on a current carrying conductor and magnetic field
3 induced emf and rate of change of flux
4 magnetic force and electrostatic force
Explanation:
According to Faraday's law, induced emf \({\varepsilon=-\dfrac{d \phi}{d t}}\) where \({\phi=}\) magnetic flux and negative sign indicates that induced emf opposes the cause that produces it, this is Lenz's law. So correct option is (3)
PHXII06:ELECTROMAGNETIC INDUCTION
358663
Direction of current induced in a wire moving in a magnetic field is found using
1 Fleming's left hand rule
2 Fleming's right hand rule
3 Ampere's rule
4 Right hand clasp rule
Explanation:
Direction of current induced in a wire moving in a magnetic field is found by using Fleming's right hand rule.
KCET - 2012
PHXII06:ELECTROMAGNETIC INDUCTION
358664
A conducting wire frame is placed in a magnetic field which is directed into the plane of the paper. The magnetic field is increasing at a constant rate. The directions of induced currents in wires \(AB\) and \(CD\) are
Consider the given loop as two triangular loops. The bigger loop dominates as its emf contribution is more to the net emf. As field is increasing the current in bigger loop is from \(D\) to \(C\) so the net current is smaller loop is from \(B\) to \(A\).
PHXII06:ELECTROMAGNETIC INDUCTION
358665
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
1 Variable
2 Clockwise
3 Anticlockwise
4 Zero
Explanation:
When an electron is moving from right to left, the flux linked with loop (which is out of the page) will first increase and then decrease as the electron passes by :
So the induced current \({I_i}\) in the loop will be first clockwise and will change direction (i.e. will become anticlockwise) as the electron passes by, so as to oppose the change in magnetic flux through the coil.
KCET - 2009
PHXII06:ELECTROMAGNETIC INDUCTION
358666
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two coils the electric current will
1 Remain unchanged
2 Increase
3 Decrease
4 The information is incomplete
Explanation:
Induced current in both the coil assist the main current so current through each coil increases.
