Navigate

A wire having resistance 12Ω is bent in the form of an equilateral triangle.

A wire having resistance 12Ω is bent in the form of an equilateral triangle. The effective resistance between any two corners of the triangle will be

Options

(a) 6Ω
(b) 8/3Ω
(c) 9Ω
(d) 12Ω

Correct Answer:

8/3Ω

Explanation:

As resistance, R ∝ length

.·. Resistance of each arm = 12 / 3 = 4 Ω

So, effective resistance between any two corners,

Reff = (4×8) / (4+8) = 32 / 12 = (8/3) Ω

BCE2012
admin:

Related Questions

  1. A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
  2. In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
  3. Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
  4. An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed
  5. A point source is kept at a distnace 1000m has an illumination I. To change the illumination