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| 1. |
A parallel plate capacitor is to be designed with a voltage rating1 kV, using a material of dielectric constant 3 and dielectric strengthabout 107 Vm–1. (Dielectric strength is the maximum electric field amaterial can tolerate without breakdown, i.e., without starting toconduct electricity through partial ionisation.) For safety, we shouldlike the field never to exceed, say 10% of the dielectric strength.What minimum area of the plates is required to have a capacitanceof 50 pF? |
| Answer» A parallel plate capacitor is to be designed with a voltage rating1 kV, using a material of dielectric constant 3 and dielectric strengthabout 107 Vm–1. (Dielectric strength is the maximum electric field amaterial can tolerate without breakdown, i.e., without starting toconduct electricity through partial ionisation.) For safety, we shouldlike the field never to exceed, say 10% of the dielectric strength.What minimum area of the plates is required to have a capacitanceof 50 pF? | |