हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Predict the direction of induced current in the situation described by the following figure. Current (I) decreasing at a steady rate

Advertisements
Advertisements

प्रश्न

Predict the direction of induced current in the situation described by the following figure.

संक्षेप में उत्तर
Advertisements

उत्तर


Lenz's law specifies the direction of the induced current in a closed loop. Using Lenz’s rule, the direction of the induced current in the given situation can be predicted as follows:

There won't be any induced current because the loop is perpendicular to the magnetic field lines.

No current is induced since the field lines are lying in the plane of the closed loop.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Electromagnetic Induction - EXERCISES [पृष्ठ १७५]

APPEARS IN

एनसीईआरटी Physics Part I and II [English] Class 12
अध्याय 6 Electromagnetic Induction
EXERCISES | Q 6.1 (f) | पृष्ठ १७५
एनसीईआरटी Physics Part I and II [English] Class 12
अध्याय 6 Electromagnetic Induction
Exercise | Q 6.1 (f) | पृष्ठ २२९

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Use Lenz’s law to determine the direction of induced current in the situation described by the figure:

A wire of irregular shape turning into a circular shape.


Predict the directions of induced currents in metal rings 1 and 2 lying in the same plane where current I in the wire is increasing steadily.


A bar magnet is moved in the direction indicated by the arrow between two coils PQ and CD. Predict the directions of induced current in each coil.


A short magnet is moved along the axis of a conducting loop. Show that the loop repels the magnet if the magnet is approaching the loop and attracts the magnet if it is going away from the loop.


A pivoted aluminium bar falls much more slowly through a small region containing a magnetic field than a similar bar of an insulating material. Explain.


Consider the situation shown in figure. If the switch is closed and after some time it is opened again, the closed loop will show ____________ .


A bar magnet is released from rest along the axis of a very long, vertical copper tube. After some time the magnet ____________ .


Two circular loops of equal radii are placed coaxially at some separation. The first is cut and a battery is inserted in between to drive a current in it. The current changes slightly because of the variation in resistance with temperature. During this period, the two loops _______________ .


Young's modulus for aluminium is 7 × 1010 Pa. The force needed to stretch an aluminium wire of diameter 2 mm and length 800 mm by 1 mm is ______.


A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, will the current increase or decrease? Explain.


Consider a metal ring kept on top of a fixed solenoid (say on a carboard) (Figure). The centre of the ring coincides with the axis of the solenoid. If the current is suddenly switched on, the metal ring jumps up. Explain


Consider a metal ring kept (supported by a cardboard) on top of a fixed solenoid carrying a current I (Figure). The centre of the ring coincides with the axis of the solenoid. If the current in the solenoid is switched off, what will happen to the ring?


A conducting wire XY of mass m and neglibile resistance slides smoothly on two parallel conducting wires as shown in figure. The closed circuit has a resistance R due to AC. AB and CD are perfect conductors. There is a ˆ. magnetic field `B = B(t)hatk`.

  1. Write down equation for the acceleration of the wire XY.
  2. If B is independent of time, obtain v(t) , assuming v(0) = u0.
  3. For (b), show that the decrease in kinetic energy of XY equals the heat lost in R.

A metallic ring of mass m and radius `l` (ring being horizontal) is falling under gravity in a region having a magnetic field. If z is the vertical direction, the z-component of magnetic field is Bz = Bo (1 + λz). If R is the resistance of the ring and if the ring falls with a velocity v, find the energy lost in the resistance. If the ring has reached a constant velocity, use the conservation of energy to determine v in terms of m, B, λ and acceleration due to gravity g.


Predict the direction of induced current in the situation described by the following figure.


Use Lenz’s law to determine the direction of induced current in the situation described by the figure.

A circular loop being deformed into a narrow straight wire.


In the diagram given below, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×