Atmospheric Electricity

Q. Electric potential of earth is taken to be zero because earth is a good

1. Insulator
2. Conductor
3. Semiconductor
4. Dielectric

Q. More than One Answer Type
एक से अधिक उत्तर प्रकार के प्रश्न

In the shown circuit, ammeter has resistance 2 Ω and voltmeter is ideal, then

दर्शाए गए परिपथ में, अमीटर का प्रतिरोध 2 Ω है तथा वोल्टमीटर आदर्श है, तब

1. Reading of ammeter will be $\frac{10}{9}$ A
   
   अमीटर का पाठ्यांक $\frac{10}{9}$ A होगा
2. Reading of ammeter will be $\frac{5}{9}$ A
   
   अमीटर का पाठ्यांक $\frac{5}{9}$ A होगा
3. Reading of voltmeter will be $\frac{10}{3}$ V
   
   वोल्टमीटर का पाठ्यांक $\frac{10}{3}$ V होगा
4. Reading of voltmeter will be $\frac{20}{3}$ V
   
   वोल्टमीटर का पाठ्यांक $\frac{20}{3}$ V होगा

Q. Statement 1: A thunderstorm acts as a battery with its upper part acting as a positive terminal and lower part as a negative terminal.
Statement 2: Positive charges accumulate at the lower part of a thunderstorm and negative charges at its upper part.

1. Statement 1 is true and Statement 2 is false
2. Statement 1 is false and Statement 2 is true
3. Both statements are true
4. Both statements are false

Q. The surface of Earth has what type of excessive charge density?

1. Positive
2. Negative
3. Neutral
4. Positive during summer and negative during winters.