1. The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the wire is 2 × 10–7 m2 , determine its (a) resistivity, and (b) conductivity
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
1. The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the
wire is 2 × 10–7 m2
, determine its (a) resistivity, and (b)
2. Calculate the (a) resistivity and the (b) conductivity of a material that has a length
of 15 m and a cross-sectional area of 5 × 10–8 m2 and a resistance (R) of 5 Ω.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
