CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Alternating Current Applied to an Inductor

A current is ...

Question

A current is flowing through a solenoid from a dc source of steady emf. What will be the nature of change in the current during a quick removal of the soft iron core from the solenoid?

Open in App

Solution

$a s w e r e m o v e d t h e s o f t i r o n c o r e t h e i n d u \tan c e o f t h e s o l e n o i d w i l l f a l l . m e a n s t h e L d e c r e a s e s . \sin c e E = L \frac{d i}{d t} \sin c e t h e L d e c r e a s e s t o k e p t t h e E c o n s \tan t t h e r a t e d i / d t w i l l r i s e h e n c e t h e c u r r e n t w i l l r i s e a b r u p t l y . R e g a r d s$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A solenoid having an iron core has its terminals connected across an ideal DC source and it is in steady state. If the iron core is removed, the current flowing through the solenoid just after removal of rod.

Q. Consider a solenoid carrying current supplied by a DC source with a constant emf containing iron core inside it. When the core is pulled out of the solenoid, the change in current will

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

Q. A solenoid with an iron core and a bulb are connected to a d.c. source. How does the brightness of the bulb change, when the iron core is removed from the solenoid?

Q. A current I=1.5 A is flowing through a long solenoid of diameter 3.2 cm having 220 turns per cm. At its centre , a 130 turn closely packed coil of diameter 2.1 cm is placed such that the coil is coaxial with the long solenoid. The current in the solenoid is reduced to zero at a steady rate in 25 ms. What is the magnitude of emf induced in the coil while the current in the solenoid is changing?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Alternating Current Applied to an Inductor

PHYSICS

Watch in App

explore_more_icon

Explore more

Alternating Current Applied to an Inductor

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon