Metre Bridge Simulator

Aim: To find the resistance of a given wire using a metre bridge and determine specific resistance.

Click for Theory, Principle & Apparatus

Principle: Wheatstone Bridge balancing condition $\frac{P}{Q} = \frac{R}{S}$. For metre bridge: $X = R \left( \frac{100 - l}{l} \right)$.

Apparatus: Metre Bridge, Galvanometer, Resistance Box, Jockey, One-way Key, Battery, Unknown Wire.

Procedure: 1. Connect circuit. 2. Choose R from box. 3. Move jockey on wire to find null point (0 deflection). 4. Measure balancing length 'l'. 5. Calculate X. Repeat for different R values.

Interactive Simulator

-30   0   +30

Galvanometer Deflection (Find 0)

R (Known Box)
X (Unknown Wire)
0 cm
100 cm



Experimental Table

Trial R (Ω) Length l (cm) (100-l) (cm) X = R $\frac{(100-l)}{l}$

Calculations

Mean Unknown Resistance (X̄): 0.00 Ω

Physics Practical Report: Metre Bridge

Student Name:
Date:

Observations Recorded:

Result:

The resistance of the unknown wire was determined experimentally using the Metre Bridge.

The mean resistance X = ... Ω.



Verified by SaiTechLabs Simulator