Which one(s) of the following statement(s) is(are) correct? (i) The magnetic field of a finitely long wire carrying steady current can be calculated by using the Biot-Savart law. (ii) The magnetic field of a solenoid which has rectangular cross-sectional area and steady current can be calculated by utilizing the Ampere's law. (iii) The magnetic field of an unsteady current carrying infinitely long wire can be calculated by using the Ampere's law. Select one: (i) and (iii) Only (ii) Only (iii) (i) and (ii) (ii) and (iii)

Which one(s) of the following statement(s) is(are) correct? (i) The magnetic field of a finitely long wire carrying steady current can be calculated by using the Biot-Savart law. (ii) The magnetic field of a solenoid which has rectangular cross-sectional area and steady current can be calculated by utilizing the Ampere's law. (iii) The magnetic field of an unsteady current carrying infinitely long wire can be calculated by using the Ampere's law. Select one: (i) and (iii) Only (ii) Only (iii) (i) and (ii) (ii) and (iii)

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