R-L Circuits

Questions|R-L Circuit|R-C Circuit|L-C Circuit

NCERT Questions|R-L Circuit|OMR

Define instantaneous and r.m.s. values of alternating current . Find formula for instantaneous value of current for R-L circuit

If frequency of R- L circuit is f then impedence will be

Alternating Circuits|R - Circuit|L - Circuit|C - Circuit

Shown in the figure is an R-L circuit. Just after the key (K) is closed

Growth and Decay OF current in L-R Circuit || Examples on Growth and Decay in L-R Circuits

Assertion (A) If the frequency of the applied AC is doubled , then the power factor of a series R-L circuit decreases. Reason (R ) Power factor of series R-L circuit is given by costheta=(2R)/(sqrt(R^(2)+omega^(2)L^(2)))

Examples on L-R and L-C Circuits

The power factor of an R-L circuit is 1/ sqrt 2 if the frequency of AC is doubled , what will be the power