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

                        

the rsistance of an ideal voltmeter and ideal ammeter respectively are zero and infinite infinite and infinite infinite and zero zero and zero

2 years ago

Answers : (1)

Susmita
425 Points
							
The answer is infinite and zero.
Remember a voltmeter is connected in parallel to a resistance to measure the voltage drop across the resistance.To do so all of the current should flow through the resistance and not through the volmeter.This can be achieved if internal resistance of voltmeter is infinite because current always prefer a path of low resistance.
Whereas an ammeter is connected in series with the resistance to measure the current flowing through the resistance.Remember that current
I=V/R.If the ammeter has a finite internal resistane ,say,r,then the current in the circuit will change to
I"=V/(R+r).So we shall get wrong value of current.Therefore r must be zero.
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

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


Course Features

  • 18 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