Which of the following expression is correct for electric field strength?
A. $${\text{E}} = {\text{D}} \in $$
B. $${\text{E}} = \frac{{\text{r}}}{ \in }$$
C. $${\text{E}} = \pi {\text{D}}$$
D. $${\text{E}} = \frac{{\text{D}}}{ \in }$$
Answer: Option D
This Question Belongs to Electrical Engineering >> Electrostatics
For making a capacitor, it is better to select a dielectric having
A. low permittivity
B. high permittivity
C. permittivity same as that of air
D. permittivity slightly more than that of air
The power dissipated in a pure capacitor is
A. zero
B. proportional to applied voltage
C. proportional to value of capacitance
D. both (B) and (C) above
A. remain uncharged
B. decrease
C. increase
D. become zero
Which of the following capacitors will have the least value of breakdown voltage ?
A. Mica
B. Paper
C. Ceramic
D. Electrolytic
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