The armature of $D C$ motor has $20 Ω$ resistance. It draws current of $1.5 A$ when run by $220 V$ DC supply. The value of back emf induced in it will be :

150 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

170 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

180 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

190 V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $190 V$
The back emf of dc motor is given as,

$E_{b} = V - I R$

$E_{b} = 220 - 1.5 \times 20$

$E_{b} = 190 V$

Suggest Corrections

Similar questions

220 V

0.50

200 V

D C

200 V

10 A

40

Join BYJU'S Learning Program