Question

Explain how resistance will change when length is halved and radius doubled​

Answer 1

Answer:

Resistance will be halved

Explanation:

As the resistance depends upon length of wire

As the length increases the resistance also increase & as the length decreases the resistance will also decrease

Answer 2

Answer:

Resistance will increase with the decrease in its  material's length since, resistance  is inversely  proportional to increase in its length.

so , resistance will increase by four times if the length is halved.

Resistance decreases when the radius is doubled as the electrons will suffer less repulsions and obstruction.

so, the resistance will be be one-fourth if the radius is doubled (when radius is doubled the area of cross section increases by four times)

HOPE YOU UNDERSTAND :)