It provides a uniform electric area, that's important for this unit. This coil is created in this type of way that it can have existing up to twenty Amperes.
Electrodynamometer Wattmeter is made up of two coils, strain https://abelvfev671599.bloggazza.com/28857430/how-much-you-need-to-expect-you-ll-pay-for-a-good-free-pop-type-beat