10th | Physics | Practical-3 | Determination of Resistivity | SSLC | Samacheer | Public | Practical

SSLC COMMON PUBLIC PRACTICAL EXAM - PHYSICS 1. DETERMINATION OF WEIGHT OF AN OBJECT USING THE PRINCIPLE OF MOMENTS Video link    • 10th | Physics | Practical-1 | Determinati...   2. DETERMINATION OF FOCAL LENGTH OF A CONVEX LENS Video link    • 10th | Physics | Practical-2 | Determinati...   3.DETERMINATION OF RESISTIVITY Video link    • 10th | Physics | Practical-3 | Determinati...   DETERMINATION OF RESISTIVITY • Connect the battery, ammeter, given wire, rheostat and key in series, as shown in the circuit diagram. • Connect the voltmeter in parallel to the unknown resistor. Close the key and hence the circuit is closed. • Adjust the rheostat such that the ammeter reads a current of 0.2 ampere. • Note down the potential difference across the resistor as shown by the voltmeter. • Adjust the rheostat and change the current in steps of 0.2A (that is 0.2A, 0.4A, 0.6A, and 0.8A) • For each current, note down the corresponding potential difference as shown by the voltmeter. • Tabulate the observations. • Measure the diameter of the wire using a screw gauge. • Measure the length of the coil using metre scale