Question

hich one of the diagrams below is not a region of space which does not contain an grams below is not a possible net electric field configuration for a 10 The two charges in the figure have identical masses. They are brought into the position shown and then released at the same time. Which of the following statements is correct? a The acceleration of 2q and the acceleration of -g are equal in magnitude. The acceleration of 2q is one-half the acceleration of -q The acceleration of 2q is four times the acceleration of-q. The acceleration of 2q is in the same direction as the acceleration of -q The acceleration of 2q is twice the acceleration of -g b +24 c d e In the circuit below, Cl = 1 10 μF, C2 = 40μF, C-21 μF. what is the cquivalent capacitance between points a and b of this circuit? 11 120 μF 80 μF 60 μF Ω when its temperature increases to T. Assume that the resistivity of tungsten vanes linearly with temperature even over the large temperature range involved here α 4.5 x10-3(C)-1 for tungsten. The temperature T of the hot filament is closest' 12 A certain lightbulb has a tungsten filament with a resistance of 2.3 2 at 20.0 C and 11.8 2

Answer 1

(9)Electric lines of force never intersect each other Option (cis not possible (10)The coloum force between two charges are attractive and identicaland exits in the form of action and reaction forces Fsince masses are equal, accelrati ons are equ Option (a)is correct (11) As shown from the circuit, wheatsones bridge condition is left(right) The bri dge is balenced, Czis removed, or discharged Now on left si de C1, C2 are in series, C1+C2 (1 10.OuF)-(40.OuF) -29.3 HF Now on right si de C1,C2 are in series (110HF) (40.0 uF) n (1 10.UF)+(40.0μ F) -29.3 μ.F Now both are parallel, equilvalent capacity is, Option (e )is correct