answer question number 2 only plz cal Final Test PHY160 Spring 2016 1. Two point
ID: 1411295 • Letter: A
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answer question number 2 only plz
cal Final Test PHY160 Spring 2016 1. Two point charges 1 nc and -3 nc are placed in two adiace of waarre with 3 m kong sides Find electric felt (magawade na vertices direction) and electric potential magnitude and sign)in the empty Find total potential of the system 2 Find DC currents (magnitudes and directions) in all resistors of the circuit shown. Find total electric power developing in this circuit. Neglect internal resistances of the batteries. Find voltage between the points A and B. 3. A metal lateral triangle of resistance 10 ohm and size 20 cm is pushed with a force 02 N one of ns sides into a homogenous of along magnetic equ speed of 15 m/s. Find strength of magnetic field field with constant 4. An optical system is made of a converging lens with focal distance 16 mm and a concave mirror of radius 41 mm. Find distance between the images produced by this system if the object placed at a distance mm from the lens the lens and mirror 63 the images in scale on the drawing below and compare the calculated values (image The with those on the drawing. sizes and image distances Object F2 Fi FrExplanation / Answer
2. Applying KVL in left side loop:
8 + 3 - 5i1 - 4 - 4i2 = 0
5i1 + 4i2 = 7.........(i)
on right side loop:
2 - 4i2 + 8 - 6i3 = 0
4i2 + 6i3 = 10 .....(ii)
applying KCL:
i2 = i1 + i3
i1 - i2 + i3 = 0 .......(iii)
solving (i), (ii), (iii),
i1 = 15/37 = 0.405 A
i2 = 46/37 = 1.24 A
i3 = 31/37 = 0.838 A
power developed = 8(1.24) + 3(0.405) + 2(0.838)
= 12.81 W
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