International Journal of Recent Engineering Research and Development (IJRERD) Volume No. 01 – Issue No. 03, ISSN: 2455-8761 www.ijrerd.com, PP. 27-31 27 | Page www.ijrerd.com Measurement of Magnetic Permeability of Matters Using Inductive Coil 1 Sawsan Ahmed Elhouri Ahmed, 2 Mubarak Dirar Abdallah, & 3 Donyay Mohana Anwar Farag 1 University of Bahri- College of Applied & Industrial Sciences- Department of Physics- Khartoum - Sudan 2 International University of Africa- College of Science-Department of Physics & Sudan University of Science &Technology-College of Science-Department of Physics- Khartoum-Sudan 3 Sudan University of Science & Technology-College of Science- Department of Physics-Khartoum-Sudan Abstract: In this work an inductive coil was used to measure the value of magnetic permeability of matter by means of alternation current. The permeability of air, aluminum, copper and iron were measured. The results found agreed with the standard ones. Introduction In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. Hence, it is the degree of magnetization that a material obtains in response to an applied magnetic field. Magnetic permeability is typically represented by the (italicized) Greek letter μ . The term was coined in September 1885 by Oliver Heaviside. The reciprocal of magnetic permeability is magnetic reluctivity[1,2,3] In SI units, permeability is measured in henries per meter (H/m or H·m −1 ), or newtons per ampere squared (N·A −2 ). The permeability constant (μ 0 ), also known as the magnetic constant or the permeability of free space, is a measure of the amount of resistance encountered when forming a magnetic field in a classical vacuum. The magnetic constant has the exact (defined) [1] value (μ 0 = 4π × 10 −7 H·m −1 ≈ 1.2566370614…×10 −6 H·m −1 or N·A −2 )[4,5]. A closely related property of materials is magnetic susceptibility, which is a dimensionless proportionality factor that indicates the degree of magnetization of a material in response to an applied magnetic field [6, 7]. Experimental Setup Materials The equipments used in this work were: AC/DC Power supply I min = 0 I max = 5 Am V min = 0 V max = 15 Volt Coil N = 250 turns A = 1.5 mm, R = 0.6 Ω I max = 5 Am Microvoltmeter V min = 1 mirovolt V max = 1000Volt Ammeter I min = 0 I max = 20 Am Rheostat R = 27.5Ω I = 5.2 Am Connecting wires Method The circuit was connected in series; the coil at the first readings was air coil then the core of the coil was filled with aluminum, copper and iron respectively, the reading were taken by changing the rheostat continuously.