A 10m length of aluminium wire has a diameter of 1.5mm. It carries a current of 12A. Find (i) the current density. (ii) the drift velocity (iii) the electric field in the wire. aluminium has approximately 10^29 free electrons per m^3
1. A carbon resistor of 47 k ohms is to be marked in the colour code . Write the sequence of colours .
2. A toaster produces more heat than a light bulb when connected in parallel to the 220 V mains
The methodology of questioning varies from examiner to examiner. The normal way of questioning is to start from the experiment you are alloted. Example: What experiment are you doing? Ans: To determine the value of unknown resistance using metre bridge...