Instrumentation Engineering or Electrical Engineering

Q: I want to start my career in Instrumentation Engineering or Electrical Engineering. In Electrical I get doubts such as if I install  transformers/generators , do wiring of apartments, building, the power comes may be utilize in watching TV, that may go to theatres etc. Sometime may be that I have to design electrical circuit for Bar's & restaurant, places of worship's of idol's etc. Am I assisting in sin indirectly by installing electrical wires, bulbs, ac's , switch boards etc... to churches, temples, theatres, stadium, banks etc. In instrumentation I have to deal with robotic technology(robots are to be utilized)? CCTV, fire alarm also come into this stream. I want to do Halal jobs and earn Halal income.

Jadoo

Q: I do know that during the time of the prophet (s.a.w) there used to be something called jadoo ( black magic). However there is a person in Johannesburg whom I have been consulting with. He claims to have been given a gift and he can check whether something has been done on you or not. He also gives us some ilaaj, like some water to drink and burning of strings for a certain number of days.i would like to know if this is true? And should we continue with the ilaaj? He also gave us an indication of a person whose being committing this act of jadoo, as we should keep our distance. Should we believe him? Or is it just creating doubt within ones mind. Other members did consult him and have done his ilaaj. They seem to feel better with it. I am really confused. Please could you advise me.

Castrating Cows

Q: One brother in Mozambique got some cows.  He wants to use male cows for transporting coconut in jungle.  At the moment he is using tractor and he is think to use male cows to save money on diesel. To use the male cows you have to castrate them ( that is remove the genitals ) so they are not inclined to female cows.  He wants to know whether it is permissible to this with the animal.