In a R-C series circuit, the capacitor is being charged with a 16 volt battery.

Question

In a R-C series circuit, the capacitor is being charged with a 16 volt battery. If R = 10 k Ohm and C = 5000 mu F, how long it will take for the capacitor to have 8 volt 12.34 sec, 34.65 se 8.55 sec, 11.11 sec 14.38 sec What is the current I in the following circuit segment? 1A, 4A, 5A, 6A, 12A Magnetic field is in y direction and conductor a, b & c is moving up in the +y direction. Which conductor(s) you think will produce voltage. Conductor a, Conductor b, Conductor c, Conductor a & c, None What is the wavelength (lambda) of 100 MHz Electromagnetic wave in free 0.3 m 0.03 m, 30 m, 1.0 m, 3.0 m What is the refractive index of glass when free space light falls on the angle 45^0 and pass through the glass with refracted angle 30^0? 0.707 1.41 1.2 1.6 1.0 In the R-L-C series circuit, R = 10 Ohm, L = 1H, C = 100 mu F and you det I = 10 lessthan-30^0. What is the power loss in the resistor R? 1000 Watts 500 Watts 200 Watts 150 Watts 100 Watts In # 31, what is the resonance frequency? 35 Hz 30 Hz, 26 Hz, 20 Hz 16 Hz An object is placed 20 cm for from a convex lens whose focal image distance? 5 cm 10 cm 15 cm 20 cm none What is correct KVL equation for the outer loop a-c-d-f-a? 3I_1+9I_x+E_1-E_2=0 3I_1-9I_3+E_1+E_2=0 3I_1+9I_3-E_1+E_2=0 3I_1+9I_3+E_1+E_2=0 3I_1+9I_3-E_1-E_2=0 A small bicycle generator has 150 turns of wire in a magnetic field is 0.2 t. If induced voltage amplitude is 12.6 c.p.m?

Explanation / Answer

26) V = Vo*[1 – exp(-t/RC)] ======> 8 = 16*[1 – exp(-t/10^4*5*10^-3)]

              t = 34.65 sec (option B)

29) Wavelength = c/f = 3.10^8/10^8 = 3 m (option E)

30) Snell’s law, n1*sin45 = n2*sin30

                n2 = 1*sin45/ sin30 = 1.41 (option B)

31) Resonant frequency = 1/[2pi*sqrt(LC)] = 15.92 Hz (option E)

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