engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Physics Current, Resistance and Electricity Electric Current
Which of the following statement is incorrect?
1
mobility µ defined as the magnitude of the drift velocity per unit electric field.
2
Ohm’s law universally applicable for all conducting elements.
3
A low voltage supply from which one needs high currents must have very low internal resistance.
4
Alloys of metals usually have greater resistivity than that of their constituent metals.