Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Which of the following gives the resistance of a uniform conductor of length and…
PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity
Problem
Which of the following gives the resistance
R
R
R
of a uniform conductor of length
L
L
L
and cross-sectional area
A
A
A
in terms of its resistivity
ρ
\rho
ρ
? (a)
R
=
ρ
L
R=\dfrac{\rho}{L}
R
=
L
ρ
(b)
R
=
2
ρ
L
A
R=2\,\rho\dfrac{L}{A}
R
=
2
ρ
A
L
(c)
R
=
ρ
L
A
R=\rho\dfrac{L}{A}
R
=
ρ
A
L
(d)
R
=
ρ
L
3
A
2
R=\rho\dfrac{L^{3}}{A^{2}}
R
=
ρ
A
2
L
3
Related theory
Resistance & Resistivity
Resistivity and factors affecting resistance
Electric Circuits
Electricity
Resistance: geometry and temperature dependence
Current Electricity
Factors affecting resistance of a conductor
Browse the problem library