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kaka01
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Homework Statement
A 3-V battery of internal resistance 1Ω is joined to a sliding wire of length 100 cm and resistance 5 Ω . A voltmeter , which takes negligible current , is connected across 60 cm length of the wire . (a) What is the reading of the voltmeter ? (b) If the reistance of the voltmeter were 150 Ω , then what would have been its reading ?
Homework Equations
I=E/(R+r)
The Attempt at a Solution
I=E/(R+r)
V=IR
V=0.5 x 5
=2.5
K=.025
Reading= .025x60=1.5 volt
I am not getting second part .
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