conbinat ton i ourrent in I1. Two realstors of values and 12 are connected in pa
ID: 1786283 • Letter: C
Question
conbinat ton i ourrent in I1. Two realstors of values and 12 are connected in paraliel.this the 4 -lad in aer les with a 4 rea lator and 6 V battery. what is the eur A) 0.75 A B)OS A 05A D) 6667A E9.6A 12. Which of the following radiations has the greatest A) Visible B) Radio C) Infrared D) Ultraviolet (E) X-rays 13. Ir·21 V battery, a 10uF capacitor and a 4,0 capacitor were wired in parallel, what would be the charge leaving the 1 battery? A) 300 LC B) 1050 C C) 12 C D) 294 C E) 47.62 C For a RCL series circuit with f-60Hz, R-400 A) 800 B) 758: C) 166.7 D) 3840 E) 1600 ohm 14. C-24-F, and L-21. Find the impedance of the circuit, Z- 15. Ifv- 0.85 c and mo 140 lbs, then what is m- lbs. A) 680 Ibs. B) 149 Ibs. C) 136 lbs. D) 265.8 bs. E) 47.6 Ibs 16, what is the force between 4 uC and 3 C charges 0.5 meter apart A) 24N B) 1.8N C) 0.432N D) 2N E) 0.3 N field. What is 17. A 3 C partic le of mass 4 x 10 Kg and velocity of 300,000 m/s enters into a 5 Tesla perpendicular magnetic the force on the charge? A) 3 B) 4.5 C) 30 D) 60 E) 15 A transformer with 1100 turns on the primary coil is used to decrease the voltage from 2000 V to 120 V for hom use. How many turns should be in the secondary coil? A) 1760 turns B) 66 turns C) 137.5 turns D) 4.4 turns E) 3.636364 turns 18. = 1 .6, find an glemtact-- 9. Ifangleoler-400 when nnade-l, and nretact- A) 200 B) 30° C) 400 D) 23.70 E) 38.567256 . What is the equivalent capacitance between points a and b? All capacitors are 1 micro A) 0.25 F B) 2.00 F C) 1.67 F(D) 0.60 uuF E) 4.00 uFExplanation / Answer
11. 6 and 12 ohm are in parallel.
1/R = 1/6 + 1/12 => R = 4 ohm
now R and 4 ohm are in series.
Req = 4 + 4 = 8ohm
I= V / Req = 6 / 8 = 0.75 A ...Ans(A)
12. highest energy = smallest wavelength
Ans(E) x rays
13. C = 10 + 4 = 14 uF
Q = C v = 14 x 21 = 294 uC
Abs(D)
14. R = 400 ohm
xL = 2 pi f L = 2 x pi x 60 x 2 = 754 ohm
Xc = 1 / (2 pi f C) = 110.5 ohm
Z = sqrt[R^2 + (XL- Xc)^2] = 757.7 ohm
Ans(B)
15. Y = 1 / sqrt[1 - (v/c)^2] = 1.90
m = m0 Y = 1.90 x 140 = 265.8 on
Ans(D)
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