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E=KQ/r²
Q=Er²/K
E=50NC-1 ,K=9×10^9,r= 40cm= 0.4m
putting values
Q= 9×10^9×0.4×0.4/50=2.88×10^8
Q=2.9×10^8C
Q=Er²/K
E=50NC-1 ,K=9×10^9,r= 40cm= 0.4m
putting values
Q= 9×10^9×0.4×0.4/50=2.88×10^8
Q=2.9×10^8C
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use formula,
E =KQ/r²
where K =9 x 10^9 Nm²/C²
Q is the charge
and r is the separation between charge and point where electric field calculated
now,
given,
E = 5 N/C
r = 40 cm = 40/100 m = 0.4 m
5 = 9 x 10^9 Q/(0.4)²
5 × 0.4 × 0.4 = 9 × 10^9 Q
0.8/9 × 10^-9 C = Q
Q = 80/9 × 10^-11 C
≈ 9 x 10^-11 C
E =KQ/r²
where K =9 x 10^9 Nm²/C²
Q is the charge
and r is the separation between charge and point where electric field calculated
now,
given,
E = 5 N/C
r = 40 cm = 40/100 m = 0.4 m
5 = 9 x 10^9 Q/(0.4)²
5 × 0.4 × 0.4 = 9 × 10^9 Q
0.8/9 × 10^-9 C = Q
Q = 80/9 × 10^-11 C
≈ 9 x 10^-11 C
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