badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12

                        

a galvanometre has a resistance of G ohm and range of volt.calculate the resistance to be used in series with it to extend its range to v volt. ans= G(n-1). please explain in detail

2 years ago

Answers : (1)

Susmita
425 Points
							
Hey  your question may have some error in it.
If a galvanometer initially has a range of 0 to 1 volt with internal resistance G and if you want to increase the range to 0 to v volt,then this is the answer.
You know that V=IR
Or,I=V/R
Current I will remain fixed.Only V,R will change in this problem.
Initially V=1 volt and R=G.So
I=1/G.
Next V=v volt and R=G+r,where r is the added resistance.So
I=v/(G+r)
Equate the two equations.
1/G=v/(G+r)
Or,vG=G+r
Or,r=vG-G
Or,r=G(v-1)
Please approve the answer if you are helped.Feel free to ask if there is any further query.
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details