The magnetic field in a solenoid of length $L$ around an iron core with $N$ turns is given by: $$ B = \mu \frac{NI}{L}.$$. Assuming some Ohm's law type of resistance in the wire we can replace $I$ with $V/R$ to get $$ B = \mu \frac{NV}{LR}.he number of turns can also increase the inductance of the coil and hence may lead to impedance, which also adds up with the resistance. Hence, I suggest the use of soft iron core, increase the current and voltage input, use a wire with low specific resistivity $\rho$ like silver or aluminum.
Highest Paid Computer Science Grads. Computer Science has an average starting salary of $53,834 and an average mid-career income of $94,530. Depending on the school you graduate from, it can vary by as much as $81,049.
Early Career Pay: $71,700. Mid-Career Pay: $147,000. The University of California school system is top-notch for landing their students well paying jobs in computer science. The Santa Barbara campus is one of two on the top 10 list, with the school's Berkeley campus being the other.