Question

Calculate the value of unknown resistance RDC in the Wheatstone bridge network, If PAB = 500Ω, QBC = 300Ω, SAD = 15Ω,at balanced condition. | वीटस्टोन ब्रिज की संतुलन की अवस्था में अज्ञात प्रतिरोध RDC का मान ज्ञात कीजिये, जब PAB = 500Ω, QBC = 300Ω, SAD = 15Ω हो |

Answer 1

Thus the value of unknown resistance is 9 Ω

Explanation:

Let the resistances be

• R1 = 500 Ω
• R2 = 300 Ω
• R3 = 15 Ω

To find: Unknown resistance R = ?

Solution:

Formula for unknown resistance is given as:

Rx = R3 x ( R2 / R1 )

Rx = 15 Ω  x ( 300 / 500 )

Rx = 15 Ω x  0.6 Ω

Rx = 9 Ω

Thus the value of unknown resistance is 9 Ω