Related Questions

  1. A transformer is used to light a 100 W and 110 V lamp from a 220 V mains.
  2. During mean life of a radioactive element, the fraction that disintegrates is
  3. For a transformer, the turns ratio is 3 and its efficiency is 0.75. The current flowing
  4. At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
  5. The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.