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In example 8, if rectangular loop is rep...

In example 8, if rectangular loop is replaced by circular loop then will the induced emf be of constant magnitude or not while entering the magnetic field?

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The figure shows a uniform, 3.0 T magnetic field that is normal to the plane of a conducting, circular loop with a resistance of 1.5 Omega and a radius of 0.024 m. The magnetic field is directed out of the paper as shown . Note: The area of the non-circular portion of the wire is considered negligible compared to that of the circular loop. What is the magnitude of the average induced emf in the loop if the magnitude of the magnetic field is doubled in 0.4 s?

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m.If this square loop is changed to a circular loop and it carries the same current the magnitude of the magnetic dipole moment of circular loop will be

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. if this square loop is changed to a circular loop and it carries the current, the magnitude of the magnetic dipole moment of circular loop will be :

Assertion A conducting loop is rotated in a uniform magnetic field with constant angular velocity omega as shown in figure. At time t = 0, plane of the loop is perpendicular to the magnetic field. Induced emf produced in the loop is maximum when plane of loop is parallel to magnetic field. Reason When plane of loop is parallel to magnetic field, then magnetic flux passing through the loop is zero.

Answer the following quesitons : (a) A closed conducting loop moves normal to the electric fieldd between the plates of a large capacitor. Is a current induced in the loop when it is (i) wholly inside the capacitor (ii) partially outside the plates of capacitor. Electric field is normal to the plane of the loop. (b) A rectangular loop and a circular loop are moving out of a uniform magnetic field region to a field free region with a constant velocity, Fig. In which loop do you expact the induced e.m.f. to be constant during the passage out of the field region, the field is normal to the loops ? (c ) Predict the polarity of the capacitor in the situation described by Fig.

A metallic loop is placed in a nonuiform magnetic field. Will an emf be induced in the loop?

A square loop of side 5 cm enters a magnetic field with 1cms^(-1) . The front edge enters the magnetic emf?

A long solenoid having n = 200 turns per metre has a circular cross-section of radius a_(1) = 1 cm . A circular conducting loop of radius a_(2) = 4 cm and resistance R = 5 (Omega) encircles the solenoid such that the centre of circular loop coincides with the midpoint of the axial line of the solenoid and they have the same axis as shown in Fig. A current 't' in the solenoid results in magnetic field along its axis with magnitude B = (mu)ni at points well inside the solenoid on its axis. We can neglect the insignificant field outside the solenoid. This results in a magnetic flux (phi)_(B) through the circular loop. If the current in the winding of solenoid is changed, it will also change the magnetic field B = (mu)_(0)ni and hence also the magnetic flux through the circular loop. Obvisouly, it will result in an induced emf or induced electric field in the circular loop and an induced current will appear in the loop. Let current in the winding of solenoid be reduced at a rate of 75 A //sec . Magnetic of induced electric field strength in the circular loop is nearly We know that there is magnetic flux through the circular loop because of the magnetic field of current in the solenoid. For the purpose of circular loop, let us call it the external magnetic field. As current in the solenoid is reducing, external magnetic field for the circular loop also reduced resulting in induced current in the loop. Finally, as the solenoid current becomes zero, external field for the loop also becomes zero and stop changing. However, induced current in the loop will not stop at the instant at which the external field stops changing. This is because induced current itself produces a magnetic field that results in a flux through the loop. External field becoming zero without any further change will compel the induced current in the loop to become zero and so magnetic flux through the loop due to change in induced current will also change resulting in a further induced phenomenon that sustains currents in the loop even after the external field becomes zero.

Sketch the magnetic field lines for a current-carrying circular loop near its centre. Replace the loop by an equivalent magnetic dipole and sketch the magnetic field lines near the centre of the dipole. Identify the difference.

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  12. What is the frequency of rotation of armature coil in AC generators?

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  13. Can and induced electric field exist at a point in space, when no mage...

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  14. If resistance of the circuit is negligible, what is the charge on the ...

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  15. What will be the magnitude and potarity of induced emf across the rod,...

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  16. Can an inductor have potential difference across it ends even if does ...

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  17. Is flux linked with all the inductors in parallel same?

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  19. Find mutual inductance if we have a square loop of side r instead of a...

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  20. A uniform magnetic field exists in the space B=B(1)hati+B(2)hatj-B(3)h...

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