A step-up transformer produces a secondary voltage that is what compared to the primary voltage?

A step-up transformer is designed to increase the voltage from the primary winding to the secondary winding. This is accomplished through the principles of electromagnetic induction and the turns ratio between the primary and secondary coils. In a step-up transformer, the secondary coil has more turns of wire than the primary coil, which results in a higher voltage being induced in the secondary circuit compared to the primary circuit.

When alternating current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil. Because there are more turns in the secondary coil, this induces a voltage that is greater than that of the primary. Therefore, the secondary voltage is indeed higher than the primary voltage, which is the defining characteristic of a step-up transformer.