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The locally rotationally symmetric Bianchi type-Ⅱ magnetized string cosmological model with bulk viscous fluid is investigated.The magnetic field is due to an electric current produced along the x-axis.Thus the magnetic field is in the y-z plane and F23 is the only non-vanishing component of electromagnetic field tensor Fib.To obtain the deterministic model in terms of cosmic time t, we have assumed the condition ξθ=const, where ξ is the coefficient of bulk viscosity and θ is the expansion in the model.