Question

Two wires are made up of same material,one is thick and the other one is thin.which wire has greater rigidity modulus,explain?

Answer 1

THE THICK ONE HAS GREATER RIGIDITY  AS IT CAN PASS OFF MORE ELECTRICITY IN SAME TIME AS COMPARED TO THIN ONE

Answer 2

The rigidity modulus of the two wires remains the same.

• Rigidity modulus is an intrinsic property of a substance.
• It shows how much a body can stretch itself and deform itself, under stress or tension.
• Its mathematical expression is:        

      Rigidity modulus = stress / strain

• It depends on the stress or pressure applied to any substance and the temperature.
• It is independent of the length, mass, and area of a substance., this means altering the thickness, size, length or mass doesn't affect the rigidity modulus of that substance.
• Therefore, on increasing or decreasing the thickness of a wire, there will be no effect on the Rigidity modulus of the wire.