English: E_(b) will decrease, and speed of the motor, decreases because, back Emf Eb = K*∅*n. So, what is happening here is, by inserting the resistance R. Drop will increase therefore, E_(b) will In that case, field current I_(f) remains constant.
Kannada: E_(b) ಕಡಿಮೆಯಾಗುತ್ತದೆ, ಮತ್ತು ಮೋಟರ್ ನ ವೇಗಕಡಿಮೆಯಾಗುತ್ತದೆ ಏಕೆಂದರೆ, back emf (ಬ್ಯಾಕ್ ಎಮ್ಫ್) E_(b) = K*∅*n.