Navigate

An air core coil and an electric bulb are connected in series with an AC source.

An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will

Options

(a) remain same
(b) increase
(c) decrease
(d) first decrease then increase

Correct Answer:

decrease

Explanation:

If an iron rod is puts in the coil, then intensity of light of bulb will decrease because the iron rod increase the resistance.

MP2013
admin:

Related Questions

  1. Two coherent sources of different intensities send waves which interfere.
  2. The nuclear radius of a certain nucleus is 7.2 fm and it has a charge of 1.28×10⁻¹⁷ C.
  3. The wavelength of the matter wave is independent of
  4. Find the right condition(s) for Fraunhofer diffraction due to a single slit.
  5. If the band gap between valence band and conduction band in a material is 5.0 eV,