Multiple Choice
Two cylindrical resistors are made of the same material and have the same resistance.The resistors,R1 and R2,have different radii,r1 and r2,and different lengths,L1 and L2.Which of the following relative values for radii and lengths would result in equal resistances?
A) r1 = r2 and L1 = 2L2
B) 2r1 = r2 and L1 = 2L2
C) r1 = r2 and 4L1 = L2
D) 2r1 = r2 and 4L1 = L2
Correct Answer:

Verified
Correct Answer:
Verified
Q17: Some superconductors are capable of carrying a
Q18: If the current in a wire is
Q19: The size of the electric current in
Q20: Which process will double the power given
Q21: Replacing a wire resistor with another of
Q23: Number 10 copper wire (radius = 1.5
Q24: A wire of length L is uniformly
Q25: An electric clothes dryer draws 10 A
Q26: A water pump draws about 3.7 A
Q27: Three wires of the same diameter and