AP EAMCET202123 Aug 2021Morning ShiftPhysicsCurrent ElectricityActual
Find the resistance of a cube of edge 60 ~cm , made of a material of specific resistance 60 10⁻⁸ m .
Options
- A2.5 10⁻⁵
- B10⁻⁸
- C10⁻⁶
- D5 10⁻⁴
Correct answer
C. 10⁻⁶
Step-by-step solution
Given, side of cube, l=60 ~cm =60 10⁻² ~m Resistivity, =60 10⁻⁸ - m Resistance, R= l A aligned & =60 10⁻⁸ 60 10⁻² (60 10⁻² )^2 & =10⁻⁶ aligned