41. The electrical conductivity of the ferrite is
42. The temperature coefficient of a resistance of a doped semiconductor is
43. Match List-I with List-II and select the correct answer using the options given below the lists:
List-I (Type of Capacitor)
List-II (Characteristic)
a. Paper
1. Low volume for large capacitance
b. Mica dielectric
2. Inexpensive
c. Ceramic dielectric
3. Suitable for RF bypass
d. Electrolytic
4. Long-term stability
| List-I (Type of Capacitor) | List-II (Characteristic) |
| a. Paper | 1. Low volume for large capacitance |
| b. Mica dielectric | 2. Inexpensive |
| c. Ceramic dielectric | 3. Suitable for RF bypass |
| d. Electrolytic | 4. Long-term stability |
44. A piece of writing paper that is 10 cm wide, 15 cm long and 0.05 mm thick has a dielectric strength of 8 kV/mm. If it is placed between two copper plates and subjected to an increasing voltage, it will break down at
45. High permittivity ceramic is used for capacitors of
46. What is the ratio of thermal conductivity to electrical conductivity equal to?
47. Strong and ductile materials
48. The magnetic material in which permanent atomic magnetic dipoles have parallel orientation is termed as which one of the following?
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