Current Electricity and Electrical InstrumentHard
Question
The resistance of wire is 20 ohm. The wire is stretched to three times of its length.. Then the resistance will be :-
Options
A.6.67 Ω
B.60 Ω
C.120 Ω
D.180 Ω
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A 2V battery is connected across AB as shown in the figure. The value of the current supplied by the battery when in one...Find potential of J with : - respect to G -...Two heating coils, one of fine wire and the other of thick wire made of same material and of same length are connected i...In the electric network shown, when no current flows through the 4Ω resistor in the arm EB, the potential differenc...Four equal resistors, each of resistance 10 ohm are connected as shown in the adjoining circuit diagram. Then the equiva...