The quantity of charge q (in coulombs) that has passed through a surface of area 3.83 cm- varies with time according to the equation q- 4t + 6, where t is in seconds. What is the value of the current density (in kA/m-) at t 1.87 s? (Answer in 2 decimal places)

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.