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The electric field strength 5.0 cm from a very long charged wire is 3700 N/C. What is the electric field strength 10.0 cm from the wire?

Answer :

The electric field strength 10.0 cm from the wire is 1032.25 N/C. It is given that the electric field strength at a distance of 5.0 cm from a long charged wire is 3700 N/C.

Since the charged wire is very long, its electric field is radial, and the magnitude of the electric field varies with distance r from the wire according to the equation:

E = λ/(2πεor), where λ is the linear charge density (charge per unit length), εo is the permittivity of free space (8.85 × 10−12 C2/Nm2), and 2πr is the circumference of a circle of radius r centered on the wire.

To find the electric field strength at a distance of 10.0 cm, substitute r = 10.0 cm = 0.1 m into the formula and solve for E:

E = λ/(2πεor)

E = (3700 N/C)(2π)(8.85 × 10−12 C2/Nm2)/(2 × 0.1 m)

E = 1032.25 N/C

Therefore, the electric field strength 10.0 cm from the wire is 1032.25 N/C.

The electric field strength 5.0 cm from a very long charged wire is 3700 N/C.

The electric field strength varies with distance r from the wire according to the equation: E = λ/(2πεor).

To find the electric field strength at a distance of 10.0 cm, substitute r = 10.0 cm = 0.1 m into the formula and solve for E:

E = λ/(2πεor)

E = (3700 N/C)(2π)(8.85 × 10−12 C2/Nm2)/(2 × 0.1 m)

E = 1032.25 N/C

Therefore, the electric field strength 10.0 cm from the wire is 1032.25 N/C.

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