ewtidow Help 51% CO Wed Nov 18 43 session.masteringphysics.com PHY 2054.0002 Phy

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ewtidow Help 51% CO Wed Nov 18 43 session.masteringphysics.com PHY 2054.0002 Physics 2 Colwel Signed in as Brandon Chin | Quit ' CH26 HW Problem 26.46 Resources Problem 26.46 Part A The inductor in the RLC tuning circuit of an AM radio has a value of 400 mH What should be the value of the variable capacitor in the circuit to tune tho radio to 731 kHz ? c131.7 131.7] Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining Retun to "The Radio around 25 pfd with the Vintage Test Equipment- Western Historic Radio Museum www.radi Mutual L is accurate to 2.5% at the m test-equipment.htm arnum val lue. Mutual L.... Using a variable speed

Explanation / Answer

f =731 kHz, L =400 mH

Resonant frequency in RLC circuit is

w =2pi*f = (1/LC)1/2

C= 1/L(4pi2*f2)

C = 1/[400*10-3 * 4*3.14*31.4*731*731*106]

C =1.18x10-13 F = 0.12 pF

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