Find the capacitance (in pF) between the two conducting spheres with atr - 10 mm and r= 30 mm. If the dielectric between them having cr = 3. O 50 O 8.0 O 7.6 O 5.7
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- What is a dielectric material, and what does it do? a. What are 3 ways capacitance can be increased by changing the materials?2) C. When the capacitor is fully charged, the top conductor while the bottom conductor D. Electric field lines are and a potential difference is E. The capacitance of a capacitor is defined as F. The unit of capacitance isGive the reason why a dielectric material increases capacitance compared with what it would be with air between the plates of a capacitor.
- A parallel-plate capacitor using a dielectric material having an Pr of 2.2 has a plate spacing of 2 mm (0.08 in.). If another material having a dielectric constant of 3.7 is used and the capacitance is to be unchanged, what must the new spacing be between the plates?A coaxial cable has an inside wire with a 1.2 mm radius and an outside conductor with an inside radius 1.4 mm and an outside radius of 1.7 mm. Take the insulator between the conductors to have a dielectric constant of 8.30. If it is connected across a 95 V de source then what is the energy per length (U/L) of the conductorsQUESTION 5 A 20 ohms resistor is connected in series with a capacitor of 0.01 farad and an emf in volts given by 40e-3¹ +20e-6. Assuming that the charge and current on the capacitor are zero at t=0, determine the charge and current at any time.
- Find the solution for the potential in a dielectric region for which er=3, the potential ? is 30 V at p=4 and V=60 V at p=2 V=-43.3 In p+50 O V= 67.2 In p-80 O V= 13.2 In p+24 O none9 When a dielectric material is inserted between the parallel plates, what will happen to the value of capacitance? Select one: a. Capacitance will remains the same. b. Capacitance will increase. c. Capacitance will decrease. d. Capacitance will become zero.A microelectrode has capacitance of 8.9 pF/cm if the pipette radius is 0.32 μm, and the typical value of dielectric constant of glass is 4. Find the inside tip radius of the electrode.
- .i. In a parallel plate capacitor, the cross sectional area of the plates are doubled and all other parameters remains the same. The ratio of Final capacitance to initial capacitance is found to be:What is the capacitance C of a capacitor if the magnitude of the charge on the positive plate conductor is 2x10exp-6C and there is a 12 volt potential difference between the conductors.@ Ⓡ 6. The conductivity of humid soil is 0.01S/m, with a relative frequency would the displacement current exceed the conductive permittivity of 30. At what current?