Question

During a thunder storm, the movement of water molecules within the clouds creates

friction, partially causing the bottom part of the clouds to become negatively charged.

This implies that the bottom of the cloud and the ground act as a parallel plate

capacitor. If the electric field between the cloud and ground exceeds the dielectric

breakdown of the air (3×106

Vm-1 ), lightning will occur.

1) If the bottom part of the cloud is 1000 m above the ground, determine the electric potential

difference that exists between the cloud and ground.

2) In a typical lightning phenomenon, around 25C of electrons are transferred from cloud to

ground. How much electrostatic potential energy is transferred to the ground? ​

Answer 1

Answer:

the equation to the locus of the points equidistant from the points (-2,3). (6-5) is

by Owhere a > 0, then ascending order of a,b,c is

A).

B) c.ba

C) b,c,a

D) a..bA man standing on truck which is moving with constant velocity at 147m/s The man throws a ball in such a way

that it returns to the truck after the truck has moved 58.8m intal speed of ball is.

A 9,8 in s

6. 19.6 m/s

C.27.4 ms

D. 30 ms

E 34 4 ms

Vinu gave a loan of Rs. 200 to Harish and recovered it at the rate of Rs. 14 per month for

twenty months. The rate of simple interest charged is:

A) 26%

B)24%

C)16%

D)12%Ans: Four atoms in every 3x102

carbon atoms were '*C, 8020 years