- Aan inductor and a capacitor
- Ban inductor but no capacitor
- Ca capacitor but no inductor
- Dneither an inductor nor a capacitor
Explanation:
Answer: A an inductor and a capacitor, B neither an inductor nor a capacitor
Reactance in electrical and electronic systems is the opposition of a circuit element to a change of electric current or voltage.Ideally a resistor has zero reactance.
Therefore in a circuit, reactance can be zero either if there are no inductors and capacitors in the circuit, or the individual reactance of inductors and capacitors cancel each other, making net reactance zero.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The magnetism of magnet is due to
|
(a) The spin motion of electron |
(b) Earth |
|
(c) Pressure of big magnet inside the earth |
(d) Cosmic rays |
The given figure represents a material which is

|
(a) Paramagnetic |
(b) Diamagnetic |
(c) Ferromagnetic |
(d) None of these |
Light coming from a star is observed to have a wavelength of 3737 Å, while its real wavelength is 3700 Å. The speed of the star relative to the earth is [Speed of light 3 ]
|
(a) 3 |
(b) 3 |
(c) 3.7 |
(d) 3.7 |
An electron and a proton are in a uniform electric field, the ratio of their accelerations will be
|
(a) Zero |
|
(b) Unity |
|
(c) The ratio of the masses of proton and electron |
|
(d) The ratio of the masses of electron and proton |
10 gm of radioactive material of half-life 15 year is kept in store for 20 years. The disintegrated material is
|
(a) 12.5 g |
(b) 10.5 g |
(c) 6.03 g |
(d) 4.03 g |
Figure gives a system of logic gates. From the study of truth table it can be found that to produce a high output (1) at R, we must have
| (a) X = 0, Y = 1 | (b) X = 1, Y = 1 | (c) X = 1, Y = 0 | (d) X = 0, Y = 0 |