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Grade: 12
        
Two point charges each of 10Mc are placed 10cm apart in air, what is the electric field intensity at midpoint on the line joining the centres of two point charges ( e0= 8.85*10^-12 c^2/Nm^2)
 
one year ago

Answers : (2)

Ravneet
104 Points
							
there are two point charges A and B  (10 MC each ) and are 10 cm apart 
CONSIDER A POINT POSITIVE CHARGE AT MIDPOINT OF LINE JOINING THE CHARGES 
Electric field at centre of line joining the two charge by A = [ k(10 X 106) ] / 0.05   [  REPULSIVE FIELD ]
Electric field at centre of line joining the two charge by B = [ k(10 X 106) ] / 0.05  [   REPULSIVE FIELD ]
AT THE MIDPOINT, BOTH FIELD CANCEL EACH OTHER EFFECT 
AND NET ELECTRIC FIELD = 0 
{BECOUSE, THEY HAVE IDENTICAL CHARGE AS WELL AS AT SAME DISTANCE }
 
one year ago
Khimraj
3008 Points
							
electric field at centre of two point charges will be zero because electric field due to one charge is cancelled by other.
one year ago
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