A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by

A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by another wire of same material of length 1.5m and diameter 0.155 mm, then the resistance of wire is

Options

(a) 25.2Ω
(b) 0.6Ω
(c) 26.7Ω
(d) 0.8Ω

Correct Answer:

25.2Ω

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. which of the following can not be emitted by radioactive substances during their decay?
  2. Electric field at a point of distance r from a uniformly charged wire of infinite
  3. A parallel plate capacitor with air between the plates has a capacitance of 9 pF.
  4. With what minimum acceleration can a fireman slide down a rope while breaking
  5. A battery having e.m.f. 4 volt and internal resistance 0.5 Ω is connected