Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
the rsistance of an ideal voltmeter and ideal ammeter respectively are zero and infinite infinite and infinite infinite and zero zero and zero
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 currentI=V/R.If the ammeter has a finite internal resistane ,say,r,then the current in the circuit will change toI"=V/(R+r).So we shall get wrong value of current.Therefore r must be zero.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -