7. AO- -5 µC i. ii. Sm 45° 0 2a=0.1 mm OB +5 µC Calculate the electric potential at point P. If we place a 10 µC charge at P, then calculate the work done at P.
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- A spherical conducting shell has an inner radius of 0.2 m and an outer radius of 0.4 m. There is no charge on the outer surface but the shell does have a nonzero net charge. All charges remain at rest. The potential at the outer surface is -2 V. The potential at the center of the cavity is V. a. 0 b. +2 C. +8 d. -2 e. +4 f. -8 g. More than one of the listed numerical answers are possible. h. -4QUESTION 5 A thin rod has a non-uniform charge per unit length given by 10) = a x, where a= 45. 0 nC/m, is distributed along the x axis from x +2.00 cm to x = +8.00 cm. If the electric potential at infinity is taken to be zero, wnat is the electric potentiai at the point P on the x-axis at x=15.0 cm? O A. 49.1 mV O B. 2.70 kVv O C. 243 V O D. None of the given options O E. 250 V1) Given the charge distribution below, determine the potential at A (upper left corner of the triangle and B (middle of the right edge of the rectangle). A -30 µC B. 7.5 cm 23.0 cm +10 uC +90 µC
- 6. The electric potential V a distance 0.5 meters from a 1.0 µC point charge is (assume that V = 0 a large distance from the charge): A. 9.00 kV B. 18.0 kV C. 36.0 kV V= K Q D. 72.0 kVA particle with charge q=16 uC is located at the origin of the coordiante system shown in the figure. Point A is located at (3,4) m. b. Calculate the value of the electric potential at point A, in volts. d. Calculate the value of EA in newtons per coulomb.10. You need a coaxial cable that can hold ± 62 nC/m of charge density. Someone hands you a cable with a 2.0 mm diameter inner conductor and 1.6 cm outer conductor (see diagram at right). The maximum potential difference the cable will tolerate is 2 kV. Will this cable work for your application? a-