How do lightning rods serve to protect buildings from lightning strikes?
Well, consider that they are:
1) good conductors;
2) connected to ground (grounded).
Basically these rods become a perferct mean for the electricity (static electricity, in the air) to reach ground...much better than other objects such as buildings that are not so good conductors and so get protected by them.
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Lightning rods provide a path of least resistance for lightning, directing it safely into the ground, thereby preventing damage to buildings.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- How do lightning rods serve to protect buildings from lightning strikes?
- Three metallic plates each of area A are kept as shown in figure and charges #q_1,q_2,q_3# are given to them find the resulting charge distribution on the six surfaces , neglecting edge effect ?
- Consider a system of three point charges ont the x axis. Charge 1 is at x=0, charge 2 is at x=0.20m, and charge 3 is at x = 0.40m. In addition, the charges have the following values: q1 = -19uC, q2=q3=+19uC. Find the the point where E =0 between x =0.20m?
- Find the components of the resultant force on it along&perpendicular to the string?
- A particle A, having a charge of 5.0*10^-7C is fixed in a vertical wall. A second particle B of mass 100 g and having equal charge is suspended by a silk thread of length 30 cm from the wall. The point of suspension is 30 cm above the particle A---?
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