X- 0 X= x, (a) (6) x (mm) (A) A

Part A Assume that the cell phone has a potential rating is about 3.8 V and a charge capacity is about 2600 mAh. What is the energy capacity for this cell phone?   Express your answer in watt-hours (Wh).   Part B Convert the charge capacity Q into coulombs.   Express your answer in coulombs (C).   Part C Convert the energy capacity U into kilojoules.   Express your answer in kilojoules (kJ).   Part D If the charge Q were stored on a parallel-plate capacitor with air as the dielectric, at the potential V, what would be the corresponding capacitance?   Express your answer with the appropriate units.   Part E If the energy in the battery were used to heat 1.0 L of water, estimate the corresponding change in the water temperature? The heat capacity of water is 4190 J/kg⋅K.   Express your answer in degrees Celsius.

PROBLEM NUMBER 2 Using the characteristics of Fig. determine I, for the following levels of VGs (with VDS > Vp): a. VGS = 0V. b. VGS = -1 V. c. VGS = -1.5 V. d. VGS = -1.8 V. e. VGS = -4 V. f. Vas= -6 V. IDSS 8 7 5 4 3 2 1 ID (mA) Ohmic Region | Locus of pinch-off values Saturation Region 15 10 Vp (for VGS = 0 V) 15 VGS = 0 V 20 VGS =-1 V VGS=-2 V VGS=-3 V VGS=-4V=VP VDS (V) 25

Two Conducting planes at z = 4 cm and z = 10 cm are held at potentials of -5 V and 10 V, respectively. The region between the plates is filled with a dielectric with conductivity o= 6x10-12 ɛ C/m3 S/m and charge density pv = E Where & is the permittivity of dielectric material. a. Draw V (z) b. Find dielectric resistance