Answer :
Answer:
[tex]1.68\times 10^{-7} C[/tex]
Explanation:
Electric field=[tex]E=2.3\times 1065 N/C[/tex]
Length of drum=l=55 cm=[tex]\frac{55}{100}=0.55 m[/tex]
Using 1 m=100 cm
Diameter ,d=11 cm=[tex]\frac{11}{100}=0.11 m[/tex]
We have to find the total charge on the drum.
We know that
[tex]q=\sigma A=\pi\epsilon_0Edl[/tex]
[tex]\epsilon_0=8.85\times 10^{-12} C^2/Nm^2[/tex]
[tex]\pi=3.14[/tex]
Substitute the values
[tex]q=3.14\times 8.85\times 10^{-12}\times 2.3\times 10^5\times 0.55\times 0.11}[/tex]
[tex]q=1.68\times 10^{-7} C[/tex]