A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0 mm² and the resistivity of copper is 1.7×10⁻⁸ Ω m, the force experienced by moving electron in the wire is ×10⁻²³ N. (charge on electron =1.6×10⁻¹⁹ C)

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136. Field inside the wire: E=ρ j=(ρ I)/A=(1.7×10⁻⁸×1)/(2×10⁻⁶)=8.5×10⁻³ V/m. F=eE=1.6×10⁻¹⁹×8.5×10⁻³=1.36×10⁻²¹ N. F=136×10⁻²³ N.

A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0 mm² and the resistivity of copper is 1.7×10⁻⁸ Ω m, the force experienced by moving electron in the wire is ______ ×10⁻²³ N. (charge on electron =1.6×10⁻¹⁹ C)

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