A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms. - Study24x7
Social learning Network
Electrical Engineering
5 followers study24x7 24 Sep 2024 10:48 AM study24x7 study24x7

A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.

A

40Ω

B

4Ω

C

2Ω

D

20Ω

GATE IIT-JEE
Like Comment Share
study24x7
Write a comment
Related Questions
500+   more Questions to answer

Popular Courses

Advanced Foundation Engineering All Levels English By Kousik Deb
Introduction to Google Ads All Levels English By Digital World
NOC:Software Engineering All Levels English By Prof. Rajib Mall
Free SEO training: SEO for beginner... Beginners Level English By Digital Marketing - Learn SEO, PPC,...
Free SEO Link Building Guide 2019 All Levels English By Digital Marketing - Learn SEO, PPC,...
Math Special Course for SSC CGL, CP... All Levels हिन्दी By Topline Coaching 999 1,499 33% off
SSC CGL, CPO, CHSL, GD Comprehensiv... All Levels English By Topline Coaching 3,999 5,499 27% off
English Special Course for SSC CGL,... All Levels English By Topline Coaching 999 1,499 33% off
Online Free SSC Mock Tests All Levels English By Topline Coaching
Featured Courses
Popular Pages

Featured Courses

Introduction to Google Ads All Levels English By Digital World
FREE
5.0
Free SEO training: SEO for beginners Beginners Level English By Digital Marketing - Learn SEO, PPC, SMO, SEM, Cont...
FREE
5.0
Free SEO Link Building Guide 2019 All Levels English By Digital Marketing - Learn SEO, PPC, SMO, SEM, Cont...
FREE
4.5
CAPF(AC) | Test Series All Levels English By Ajabs Academy Pvt Ltd
FREE
5.0
BESTSELLER
SSC CGL, CPO, CHSL, GD Comprehensive Course All Levels English By Topline Coaching 3,999 5.0
NDA Exam Online Course 2021-2022 Beginners Level English By Sigma Classes 15,000 5.0
G.S. Foundation Premium Course All Levels हिन्दी By RAU IAS COACHING 2,199 5.0
English Special Course for SSC CGL, CPO, GD All Levels English By Topline Coaching 999 5.0
Online Free SSC Mock Tests All Levels English By Topline Coaching
FREE
4.5
Math Special Course for SSC CGL, CPO, GD All Levels हिन्दी By Topline Coaching 999 5.0

Popular Pages

SAT (Scholastic Assessment Test)

18 followers

Reasoning special by Parwez Alam

148 followers

Study24x7

1221 followers

Henry Harvin

60 followers

SSC Preparation Strategies & Study Mater...

1543 followers

CBSE Study Materials

84 followers

Banking/IRDA

265 followers

DEFENCE EXAM PREPARATION

22 followers

Vivishka Learning and Test Series

343 followers

RAU IAS COACHING

1610 followers

Get the App

Download the Study24x7 App, so you can connect and collaborate.

study24x7
study24x7
Most Related Articles