The resistivity, P, of a material of length ...
The resistivity, P, of a material of length l, cross-sectional area A, resistance R, is given by the equation
P=RAl
P=lRA
P=RlA
P=RAl
Correct answer is A
resistivity P is directly proportional to the product of resistance and cross-sectional area and inversely proportional to the length of the wire
Which of the following is not true of an electrical charge? ...
A machine is said to be a third class lever when the ...
Calculate the inductance L, of the coil in the circuit diagram shown above ...
Which of the following radiations has it's frequency lower than that of infrared radiation? ...