Current Electricity and Electrical InstrumentHard
Question
The specific resistance of a metal wire is 64 × 10−6 Ω × cm., the length is 198 cm and the resistance is 7Ω. The radius of wire is :
Options
A.2.4 cm
B.0.24 cm
C.0.024 cm
D.24 cm
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
In the circuit diagram each resistor of resistance 5Ω. The points A and B are connected to the terminals of a cell ...An ammeter and a voltmeter are joined in series to a cell. Their readings are A and V respectively. If a resistance is n...In a metre bridge experiment null point is obtained at 20 cm from one end of the wire when resistance X is balanced agai...Consider the junction diode as ideal. The value of current flowing through AB is:...Reading of ammeter in ampere for the following circuit is :-...