Part A What is E 0 at a point 1.80 m from a light source whose output is 18 W ?

Question

Part A What is E0 at a point 1.80m from a light source whose output is 18 W? Assume the bulb emits radiation of a single frequency uniformly in all directions. Express your answer to two significant figures and include the appropriate units. E0 = SubmitMy AnswersGive Up Part B What is B0 at a point 1.80m from the light source? Express your answer to two significant figures and include the appropriate units. B0 = SubmitMy AnswersGive Up Part A What is E0 at a point 1.80m from a light source whose output is 18 W? Assume the bulb emits radiation of a single frequency uniformly in all directions. Express your answer to two significant figures and include the appropriate units. E0 = SubmitMy AnswersGive Up Part A What is E0 at a point 1.80m from a light source whose output is 18 W? Assume the bulb emits radiation of a single frequency uniformly in all directions. Express your answer to two significant figures and include the appropriate units. E0 = SubmitMy AnswersGive Up E0 = E0 = SubmitMy AnswersGive Up Part B What is B0 at a point 1.80m from the light source? Express your answer to two significant figures and include the appropriate units. B0 = SubmitMy AnswersGive Up Part B What is B0 at a point 1.80m from the light source? Express your answer to two significant figures and include the appropriate units. B0 = SubmitMy AnswersGive Up B0 = B0 = SubmitMy AnswersGive Up E0 =

Explanation / Answer

apply I = power/area = Emax^2 /2uoC

so Emax^2 = 18 * 2* 4pi*10^-7 * 3e8/(4pi* 1.8*1.8)

Emax = 18.25 N/C or V/m

Erms = 12.906 V/m

Bmax = E/c = 18.25/3e8 = 6.085 *10^-8 T

Brms = 4.302 *10^-8 T

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