Air-core coils are practically free from

Related MCQs

• The self inductances of two coils are 8 mH and 18 mH. If the co-efficients of coupling is 0.5, the mutual inductance of the coils is
• Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be
• Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be
• If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is
• Mutually inductance between two magnetically-coupled coils depends on
• The co-efficient of coupling between two air core coils depends on
• Two 300 uH coils in series without mutual coupling have a total inductance of
• The absolute permittivity of free space is given by
• The relative permittivity of free space is given by
• Substances which have permeability less than the permeability of free space are known as