Question

In the figure three point charge q)1 = +3.0 mu C q_2 = +2.50 mu C and q_3 = -3.50 mu C. The electric potential (in V) at point P is: a) 2250.0 b) 33750 c) 2812.5 d) 562.5 What is the speed of a proton line m/s) that has been accelerated from rest through a potential difference of 334 times 10^3 V? a) 1.6 times 10^6 b) 4.0 times 10^5 c) 8.0 times 10^5 d) 1.2 times 10^6 If electric potential varies with x as V(x) = -2x^2 -5x (volts), then the magnitude of electric field at x = 0.5 m (volt/m) is: a) 17 b) 13 c) 21 d) 7 If the charge q =14.0 mu C moves a displacement r vector = 0.01 i + 0.02j (m) in a uniform electric field E vector = 1000i + 2000j volt/m, then the potential energy in this case is: a) -1000 mu J b) -300 mu J c) -500 mu J d) -700 mu J A 8 mu F capacitor is connected to 6 V battery. The energy stored in the capacitor is a) 144 mu J b) 288 mu J c) 72 mu J d) 648 mi J

Answer 1

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hen a body moves Hhrrough a potenthal V erence on a uni-chart e a charge 2. 2 a レ 3 .61 x 1o beltery V A enr become 2 2.

rmula: V is a ナ 2. 5 DU alona ndirtec! magnitude 아 E 100 kno oork done in moving a body by rc displacement charge when plaud in a Electric feld E om the de PotenHal energy =