Electric Circuits
When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by

 ω ε/σ.
 ω σ/ε.
  σ/ω ε.
 σ ω ε.

ANSWER DOWNLOAD EXAMIANS APP

Electric Circuits
Two electric bulbs have transparent filament of same thickness. It one of them gives 60 W and other gives 100 W, then-

 100 W lamp filament has longer length.
 60 W lamp filament has longer length.
 60 W and 100 W lamp filament have equal length.
 60 W lamp filament has shorter length.

ANSWER DOWNLOAD EXAMIANS APP