Hi 

I need a physics tutor

Question 1

      

a) 600 m of   wire is allocated for 5 houses. Only 450 m is delivered. How many houses can   be wired completely?

b) Two   thirds of a project is wired using wire with resistance of                     . The remaining third uses wire of   . What is the average resistance of the project?

c) What   would the resistance be if the project in b) used 50 m of wire?

d) What   would the length of each wire type be in b)?

Question 2

      

Using Mesh Analysis for the circuit shown, the   following two equations are obtained for the currents. Solve them   simultaneously, showing your chosen method. Values to 3 s.f.

                  

Question 3

      

What is   the voltage drop over two 12 AWG conductors (resistance of 0.20 ohms per 100   m) supplying a 16 A load located 50 m from the power supply?