How much current is needed? Problem 23.66 Express your answer using two signific

Question

How much current is needed? Problem 23.66 Express your answer using two significant figures You would like to store 9.3 J of energy in the I-52 A magnetic field of a solenoid. The solenoid has 620 circular turns of diameter 7.4 cm distributed Submit My Answers Give Up uniformly along its 30 cm length Correct Part B What is the magnitude of the magnetic field inside the solenoid? Express your answer using two significant figures B= 0.13 T Submit My Answers Give Up Correct Part C What is the energy density (energy/volume) inside the solenoid? Express your answer using two significant figures KJ / Submit My Answers Give Up

Explanation / Answer

Energy density = B2/(2×4×3.14×10^-7)

B = u.n.i

Energy density ,= 0.13÷(4×3.14×10^-7)

= 10.35×10^5 ....answer

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