A 6.8 μF parallel plate capacitor has 160 μC of charge on its plates. If the plates are 2 mm apart, find the electric field strength between the plates.
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- A circular ring of charge with radius b has total charge q uniformly distributed around it. What is the magnitude of the electric field at the center of the ring? (a) 0 (b) keq/b2 (c) keq2/b2 (d) keq2/b (e) none of those answersProblems 72, 73, and 74 are grouped. 72. A Figure P26.72 shows a source consisting of two identical parallel disks of radius R. The x axis runs through the center of each disk. Each disk carries an excess charge uniformly distributed on its surface. The disk on the left has a total positive charge Q, and the disk on the right has a total negative charge Q. The distance between the disks is 3R, and point A is 2R from the positively charged disk. Find an expression for the electric potential at point A between the disks on the x axis. Approximate any square roots to three significant figures. FIGURE P26.72 Problems 72, 73, and 74.A uniform electric field E = 3 000 V/m exists within a certain region. What volume of space contains an energy equal to 1.00 107 J? Express your answer in cubic meters and in liters.
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- A parallel plate capacitor has a plate area of 21.4 x 10-4 m2 and a plate separation distance of 27 mm. What is the electric field strength between its plates if it stores 49.0 mJ of energy?A parallel-plate capacitor is formed from two 1.2 cm-diameter electrodes spaced 2.0 mm apart. The electric field strength inside the capacitor is 1.0×106N/C. What is the magnitude of the charge(in nC) on each electrode?A parallel-plate capacitor is formed from two 8.0-cm-diameter electrodes spaced 1.8 mm apart. The electric field strength inside the capacitor is 6.0 × 106 N/C. What is the magnitude of the charge (in nC) on each electrode?
- An air filled capacitor is connected to a 3.0V battery. Each plate of the capacitor has area of 0.7m2 and the separation is 1.5mm. What is the magnitude of the electric field at the midpoint between the plates?Each plate of an ideal air-filled parallel-plate capacitor has an area of 1,424 mm² and the separation of the plates is 0.076 mm. An electric field of 2.610 x 106 V/m is present between the plates. What is the surface charge density on the plates? (ε = 8.85 × 10-12 C²/N·m²) Give your answer in µC/m².An electron gun has parallel plates separated by 4.00 cm and gives electrons 25.0 keV of energy. What is the electric field strength between the plates?