MyQuestionIcon

1

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

Field Due to a Solenoid

A constant cu...

Question

A constant current of 2 A is passing through a solenoid of inductance 12 H. Then,

A

Emf induced across solenoid 8 volt.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Emf induced across solenoid 6 volt.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Potential difference across solenoid is 0 volt.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Potential difference across solenoid is 8 volt.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Potential difference across solenoid is 0 volt.
$e m f = L \frac{d i}{d t} = 0$ (since i = constant)

Suggest Corrections

thumbs-up

0

Similar questions

Q. The current flowing through a solenoid of self-inductance

1 H

i = 5 sin \frac{π t}{4} .

What will be the emf induced across the solenoid at time

t = 2 s .

Q. A capacitor of capacitance

100 μ F

is connected to a battery of

10 V

for a long time and then disconnected from it. It is now connected across a solenoid having

200

turns per meter. It is found that the potential difference across the capacitor drops to

90 %

of its maximum value in

2 s .

Find the average magnetic field induced at the centre of the solenoid ?

100 v D C

is applied across a solenoid , a steady current of

1 A

flows in it. When

100 V A C

is applied across the same solenoid, the current drops to

0.5 A

. If the frequency of the AC source is

150 / \sqrt{3} π

Hz, the impedance and inductance of the solenoid are:

Q. The length of a solenoid is 0.3 m and the number of turns is 2000. the area of cross-section of the solenoid is

1.2 \times 10^{- 3} m^{2}

. another coil of 300 turns is wrapped over the solenoid. a current of 2A is passed through the solenoid and its direction is changed in 0.25 sec. then the induced emf in coil :

Q. When 100 volts dc is supplied across a solenoid, a current of 1.0 amperes flows in it. When 100 volts ac is applied across the same coil, the current drops to 0.5 ampere. If the frequency of ac source is 50 Hz, then the impedance and inductance of the solenoid are

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Field Due to a Solenoid

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon