Question
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 second, given L = 10 mH
|
(a) 1 V |
(b) 1 mV |
(c) 1 mV |
(d) 0.1 V |
✓
Answer
(b) 1 mV
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The relationship between potential difference V, charge Q and capacitance C is:
The bending of beam of light around corners of obstacles is called
|
(a) Reflection |
(b) Diffraction |
(c) Refraction |
(d) Interference |
The permanent magnet is made from which one of the following substances
| (a) Diamagnetic | (b) Paramagnetic | (c) Ferromagnetic | (d) Electromagnetic |
Which of the following in a hydrogen atom is independent of the principal quantum number n? (The symbols have their usual meanings).
The magnetic field due to a short magnet at a point on its axis at distance X cm from the middle point of the magnet is 200 Gauss. The magnetic field at a point on the neutral axis at a distance X cm from the middle of the magnet is
|
(a) 100 Gauss |
(b) 400 Gauss |
(c) 50 Gauss |
(d) 200 Gauss |
The device is based on the principle of mutual induction is:
If 
in the given figure, then resistance X will be
|
(a) 5Ω |
(b) 10 Ω |
(c) 15 Ω |
(d) 20 Ω |
A large nonconducting sheet M is given a uniform charge density. Two uncharged small metal rods A and B are placed near the sheet as shown in figure:
Two identically charged spheres when suspended by strings of equal lengths make an angle of 30∘ with each other. The angle remains the same when they are immersed in a liquid of density less than the density of the material of the spheres. Choose the correct option
The equivalent resistance and potential difference between A and B for the circuit is respectively
|
(a) 4 W, 8 V |
(b) 8 W, 4 V |
(c) 2 W, 2 V |
(d) 16 W, 8 V |