Advertisements
Advertisements
प्रश्न
A coil of 200 turns carries a current of 0.4 A. If the magnetic flux of 4 mWb is linked with each turn of the coil, find the inductance of the coil.
Advertisements
उत्तर
Given data:
N = 200
i = 0.4 A
ΦB = 4 mWb = 4 × 10-3 Wb
L = ?
NΦBi = Li
L = `("N"phi_"B")/"i"`
L = `(200 xx 4 xx 10^-3)/0.4`
`= (cancel(200) xx cancel(40) xx 10^-3)/cancel(4)`
L = 2H
APPEARS IN
संबंधित प्रश्न
Explain why, an electromagnet is called a temporary magnet.
An induced current is produced when a magnet is moved into a coil. The magnitude of induced current does not depend on:
(a) the speed with which the magnet is moved
(b) the number of turns of the coil
(c) the resistivity of the wire of the coil
(d) the strength of the magnet
Electromagnetic induction means ______.
Fill in the blanks by writing (i) Only soft iron, (ii) Only steel, (iii) Both soft-iron and steel for the material of core and/or magnet.
D.C. motor ______.
The energy stored in a 50 mH inductor carrying a current of 4 A is ______
Write the two names in the following diagram.
Fleming’s right hand rule.
A 50 cm long solenoid has 400 turns per cm. The diameter of the solenoid is 0.04 m. Find the magnetic flux linked with each turn when it carries a current of 1 A.
The instrument that use to defect electric current in the circuit is known as ____________.
Sea turtles return to their birth beach many decades after they were born due to ______.
A coil of one turn is made of a wire of certain length and then from the same length, a coil of two turns is made. If the same current is passed in both the cases, then the ratio of the magnetic inductions at their centres will be:
