# Question

In Exercise 30, if you wanted to double the field strength while keeping the current and turn count the same, what would the coil area have to be?

## Answer to relevant Questions

(a) Show that the right-hand side of Eq. 19.13b gives the correct SI units for magnetic field. (b) Show that Eq. 19.13 b reduces to Eq. 19.13a when the central axis location is at the center of the loop. Two long, parallel wires carry currents of 8.0 A and 2.0 A (Fig. 19.38). (a) What is the magnitude of the magnetic field midway between the wires? (b) Where on a line perpendicular to and joining the wires is the magnetic ...A circular loop of wire with a radius of 5.0 cm carries a current of 1.0 A. Another circular loop of wire is con-centric with (that is, has a common center with) the first and has a radius of 10 cm. The magnetic field at the ...A circular wire coil consists of 100 turns and is wound tightly around a very long iron cylinder with a radius of 2.5 cm and a relative permeability of 2200. The loop has a current of 7.5 A in it. Determine the magnetic ...If you wanted to make a more compact ac generator (operating at the same frequency) by reducing the area of the coils, how would could you compensate by changing its other physical characteristics in order to maintain the ...Post your question

0