NEET Class neet Answered
two positive charges of 1 micro columb and 2 micro columb are placed 1 metre apart , the value of electric field at the mid point
Asked by bhaktisheetal1234 | 18 Mar, 2024, 11:27: PM
Expert Answer
Let two charges 1 μC and 2 μC are placed at points A and B which are 1 m apart.
Let C be center between A and B . Let E1 be the electric field due to 1 μC charge at A and
E2 be the electric field due to 2 μC charge at B .
E1 and E2 are in opposite direction to each other as shown in figure.
Electric field E at a point P which is at a distance d from charge q is
E = K × q/d2
where K = 1/(4πεo) = 9 × 109 N m2 C-2 is Coulomb's constant
E1 = [ 9 × 109 × ( 1 × 10-6 ) ] / (0.5)2 N/C = 36 × 103 N/C
E2 = - [ 9 × 109 × ( 2 × 10-6 ) ] / (0.5)2 N/C = -72 × 103 N/C
Magnitude of net electric field = | E1 + E2 | = 3.6 × 104 N/C
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