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Class 12
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Metre Bridge-Resistance of a wire
Metre Bridge-Resistance of a wire
Theory
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Simulator
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1)
What is the best material used for making connecting wires?
Tungsten
Nichrome
Constantan
Copper
2)
Conductivity is the reciprocal of _________.
Resistivity
Conductance
Capacitance
Specific resistance
3)
Two wires A and B are made of same material has equal length and A is having twice the area of B. Which of the following is true in this case?
Resistances of both A and B are equal
Resistances of A is greater than that of B
Resistance cannot be predicted
Resistance of B is greater than that of A
4)
A wire has resistivity ρ, its length is doubled and its area of cross section is halved. What will be the new value of resistivity of the wire?
4ρ
2ρ
ρ
ρ/2
5)
The resistance of the conductor of unit length and unit area of cross section is called?
Conductance
Conductivity
Capacitance
Specific resistance
6)
Calculate the resistance of a copper wire of 50 m long and diameter 1 mm. Resistivity of copper is 1.7 x 10-8 Ωm.
0.108 Ω
10.8 Ω
1.08 Ω
108 Ω
7)
Find the resistivity of the material of a wire of length 1 m and diameter 2mm, if its resistance is 16 ohms.
16π x 10⁻⁶ Ωm
4π x 10⁻⁶ Ωm
16π x 10⁻⁷ Ωm
4 π x 10⁻⁷ Ωm
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Cite this Simulator:
amrita.olabs.edu.in,. (2013). Metre Bridge-Resistance of a wire. Retrieved 26 May 2017, from amrita.olabs.edu.in/?sub=1&brch=6&sim=146&cnt=308