A rectangular conducting loop moves horizontally in a uniform magnetic field B → perpendicular to its plane. What if the loop is stationary and the field changes with time?

If loop is stationary and magnetic field is changing with time, the current will be induced in the loop, direction of which will depend on whether the magnetic field is being increased or decreased.

A rectangular conducting loop moves horizontally in a uniform magnetic field B → perpendicular to its plane. What if the loop is stationary and the field changes with time?

If loop is stationary and magnetic field is changing with time, the current will be induced in the loop, direction of which will depend on whether the magnetic field is being increased or decreased.

What are eddy currents?

Eddy currents : (Also called Foucault's Currents) Eddy currents are the loop of electrical currents induced within the conductors by magnetic field in the conductor, and it is perpendicular to magnetic field, as per Faraday's law of induction.

How does the self-inductance of a coil depend on the number of turns of the coil?

Self-inductance(L) of a coil depend on the number of turns(N) of the coil. Where self inductance is directly proportional to square of the number of turns. L ∝ N 2 . Here self inductance is represented by L, and Number of turn is represented by N.

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A rectangular conducting loop moves horizontally in a uniform magnetic field $\vec{B}$ perpendicular to its plane.

What if the loop is stationary and the field changes with time?

Important Questions on Electromagnetic Induction

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 42

A coil of copper wire is being pulled with a constant velocity in a magnetic field. If its ohmic resistance be increased, will it be easier to pull it? If the magnetic field be doubled, then?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 43

A rectangular loop and a circular loop are moving out of a uniform magnetic field to a field-free region with constant velocity. The field is normal to the loops. Which loop will have a constant induced emf during the passage out of the field region?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 44

A coil is wound on an iron core and looped back on itself so that the core has two sets of closely-wound wires in series that carry currents in opposite directions. What is the effect of this type of winding on the self-inductance of the coil?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 45

A copper sheet is placed in a magnetic field. If we pull it out of the field or push it into the field, we experience an opposing force, why?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 46

A metal piece and a stone are dropped from the same height near earth’s surface. Which one will reach the earth earlier?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 47

An iron bar falling vertically through the hollow region of a long vertical copper tube experiences a retarding force and attains a terminal velocity. What can you say about the bar? what will be the effect on the terminal velocity, if the copper tube be heated?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 48

An electron is moving with uniform speed along a circle in a magnetic field normal to the plane of the circle. If the field increases with time, will the electron gain speed or loose speed? Will it maintain its same circular path?

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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 1

State and explain Faraday’s laws of electromagnetic induction. What is the significance of the negative sign appearing in the first law?

A rectangular conducting loop moves horizontally in a uniform magnetic field B→ perpendicular to its plane. What if the loop is stationary and the field changes with time?

Important Questions on Electromagnetic Induction

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A rectangular conducting loop moves horizontally in a uniform magnetic field $\vec{B}$ perpendicular to its plane.

What if the loop is stationary and the field changes with time?