You need to construct a 100 pF capacitor for a science project. You plan to cut two L x L metal squares and insert small spacers between their corners. The thinnest spacers you have are 0.20 mm thick. What is the proper value of L?

A solid cylindrical conductor of radius 2.1 cm is coaxial with a cylindrical shell of negligible thickness, radius 2.3 cm. Find the capacitance ( in units of nF) of this cylindrical capacitor if its length is 51.8 m. Select one: A. 41.99 B. 21.27 C. 14.56 D. 31.63 E. 47.17

A parallel plate capacitor is made from two aluminum foil sheets, each 3.8cm wide and 6.1 m long. Between the sheets is a Teflon strip of the same width and length that is 0.025mm thick. What is the energy stored in the capacitor when the charge on the capacitor is 30 uC?

A capacitor is constructed out of two foil wrappers that have a length of 8.7 cm and width of 2.1 cm, and the plates (wrappers) are spaced 7 μm apart. If the capacitor is filled with a dielectric that has a constant of 120, what is the capacitance? (in F) a. 6.69×10-8 F  b. 3.61×10-6 F c.  2.31×10-9 F  d. 1.92×10-11 F e.  2.77×10-7 F

A Geiger-Mueller tube is a radiation detector that consists of a closed, hollow, metal cylinder (the cathode) of inner radius ra and a coaxial cylindrical wire (the anode) of radius (see figure below) with a gas filling the space between the electrodes. Assume that the internal diameter of a Geiger-Mueller tube is 1.95 cm and that the wire along the axis has a diameter of 0.190 mm. The dielectric strength of the gas between the central wire and the cylinder is 1.25 x 106 V/m. Use the equation ain 2πrle= to calculate the maximum potential difference that can be applied between the wire and the cylinder before breakdown occurs in the gas. €0 Anode Cathode 148 X Your response differs from the correct answer by more than 10%. Double check your calculations. V Need Help? Read It

A 3.9-μF capacitor is fully charged by a 9.0-V battery. The battery is then disconnected. The capacitor is not ideal and the charge slowly leaks out from the plates. The next day, the capacitor has lost half its stored energy. A. Calculate the amount of charge lost.