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Question 4 Question: Not yet answered Part 1) Marked out of 1.00 Flag . . . question Which of the methods below can be used to derive the expression for the magnetic field a vertical distance a above a horizontal, infinite wire carrying a current I? Select all that apply. Gauss's law for magnetism with a cylinder of length L and radius a centered on the wire. Gauss's law for magnetism with a circular loop of radius a centered on the wire. Ampere's law with a cylinder of length L and radius a centered on the wire. Ampere's law with a loop of radius a centered on the wire. The Biot-Savart law summing contributions along the wire. Part 2) Fids TA Consider the magnetic field at point P due to the current carrying loop shown. The loop consists of two straight sections and two circular sections that subtend and angle 0 = 21.20, the inner radius is TA = 0.108 m and the outer radius is rg = 0.382 m. A current I = 0.164 A flows around the loop. Calculate the magnitude of the magnetic field at P due to the current in the increments with length ds marked on the diagram. The blue increment goes from left to right along the arc at TB. dB = ds T The red increment goes from top to bottom along the straight line on the right hand side. dB = ds T Part 3) What is the magnetic field, B. at point P due to the current around the entire loop? Choose the direction and include a sign in your answer so for example if it is down the screen choose "up the screen" and then enter a negative sign to show it is down the screen. B= in the direction (No answer given) Previous page Next page