Q1. What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. The reading if the ammeter decreases to half when the length of the wire is doubled. Why?
Q2. Should the resistance of an ammeter be low or high? Give reason.
Pleeeeeez answer and help with the above questions. The answers should be as per class 10 level. Pleeeeeeeeeeeeeeez help, would be appreciated!