Current Electricity and Electrical InstrumentHard
Question
The balancing length is obtained at 78.4 cm length while measuring the potential difference at the ends of a resistance wire. When same potential difference is measured with a voltmeter, it shows 1.20 volt. If a standard cell of emf 1.018 volt is balanced at 63.2 cm, the error in voltmeter reading in volt will be : -
Options
A.−0.06
B.+0.06
C.−0.03
D.+0.03
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A wire of resistance R is stretched to double its length. It6s new resistance is...In the following circuit diagram the value of resistance X for the potential difference between B and D is zero : -...The supply voltage to a room is 120V. The resistance of the lead wires is 6Ω. A 60 W bulb is already switched on. W...Which of the following wires of the same material will have higher resistance :-...An electric bell has a resistance of 5Ω and requires a current of 0.25 A to work it. Assuming that the resistance o...