MCQ
Whenever current is changed in a coil, an induced e.m.f. is produced in the same coil, This property of the coil is due to.
- Amutual induction
- Bself induction
- Ceddy currents
- Dhysteresis
✓
Answer
- self induction
Explanation:
The property of induction of e.m.f. in the same coil when there is a change in current in it is called selfinduction.
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
It two parallel wires carry current in opposite directions:
Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are
|
(a) 5I and I |
(b) 5I and 3I |
(c) 9I and I |
(d) 9I and 3I |
An object is placed at 20 cm from a convex mirror of focal length 10 cm. The image formed by the mirror is
|
(a) Real and at 20 cm from the mirror |
|
(b) Virtual and at 20 cm from the mirror |
|
(c) Virtual and at 20/3 cm from the mirror |
|
(d) Real and at 20/3 cm from the mirror |
Assertion : Two electric bulbs of 50 and 100 W are given. When connected in series 50 W bulb glows more but when connected parallel 100 W bulb glows more.
Reason : In series combination, power is directly proportional to the resistance of circuit. But in parallel combination, power is inversely proportional to the resistance of the circuit.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
In Rutherford's $\alpha\text{ - particle}$ scattering experiment, what will be correct angle for α scattering for an impact parameter b = 0?
→The value of amplitude modulation index is :
Which of the following products in a hydrogen atom are independent of the principal quantum number n? The symbols have their usual meanings.
- vn.
- Er.
- En.
- vr.
The transistors provide good power amplification when they are used in
|
(a) Common collector configuration |
(b) Common emitter configuration |
|
(c) Common base configuration |
(d) None of these |
If we express the energy of a photon in KeV and the wavelength in angstroms, then energy of a photon can be calculated from the relation
|
(a) E = 12.4 hv |
(b) E = 12.4 h/ |
(c) E = 12.4/ |
(d) E = hv |
In Young’s double slit experiment, the wavelength of the light used is doubled and distance between two slits is half of initial distance, the resultant fringe width becomes
|
(a) 2 times |
(b) 3 times |
(c) 4 times |
(d) 1/2 times |