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Asked by meenatoofansingh3 | 09 Jun, 2021, 04:57: PM
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When an object acquires electrical charge, it gets electrical potential.
 
For example if q is the charge given to a sphere of radius r , then the electrical potential U of sphere is given by
 
U = K × ( q / r )
 
where K = 1/(4πεo ) = 9 × 109 N m2 C-2 is Coulomb's constant 
 
Let us assume 1 C charge is given to a sphere of radius 10 cm , then the potential of sphere is given as
 
U = 9 × 109 × (1 / 0.1 ) = 9 × 1010 Volt 
 
It is very difficult to insulate such a high potential from surrounding materials .
 
Electrical sparking will take place and it is highly dangerous. 
Answered by Thiyagarajan K | 09 Jun, 2021, 10:05: PM
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