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A long wire carries 15 A. It is bent into a hairpin… | StemPy Lab

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A long wire carries 15 A. It is bent into a hairpin: two long straight parts, parallel to each other, joined by a semicircle of radius 5 cm. Each straight part ends exactly where the semicircle begins. What is the size of the field at the centre of the semicircle?

PhysicsHardHigh School (11–12)Electricity & Magnetism › Magnetic Effects of Current JEE Main AP A-Level IB

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A long wire carries $15$ A. It is bent into a hairpin: two long straight parts, parallel to each other, joined by a semicircle of radius $5$ cm. Each straight part ends exactly where the semicircle begins. What is the size of the field at the centre of the semicircle?

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← Two identical flat coaxial coils, each of 28 turns and radius 10 cm, carry 2 A in the same sense. Their centres are 10 cm apart, on a common axis. What is the field on the axis, halfway between the centres?Which statement about Ampere's circuital law is NOT correct? →

More onElectricity & Magnetism › Magnetic Effects of Current

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