List 2 precautions that must be taken while determining the equivalent resistance of the 2 resistors connected in series
Answers
hey mate........,
1.Remove the dust and other insulating particles from the ends of connecting wires by rubbing it with a sand paper.
2.All the connections should be kept tight and properly connected as per circuit diagram.
3.Take out the plug from the plug key in between the two observations.
4.A low resistance rheostat should be used in the circuit to obtain a large variation in current.
5.A thick copper connecting wire should be used in the circuit.
6.The positive terminals of the ammeter and voltmeter must be connected to the positive terminal of the battery or battery eliminator.
7.The voltmeter should be connected in parallel to the combination of resistors.
8.Never connect the two terminals of the cell without any resistance.
extra points are always good