State Faraday's law of electromagnetic induction.
An industrial high-voltage step-up transformer is connected to an alternating input voltage of 110 V, 60 Hz. The output voltage from the secondary coil is 4.4 kV4.4\text{ kV}4.4 kV. The primary coil consists of 150 turns.
Calculate the number of turns on the secondary coil.
At one particular instant, the output voltage from this transformer is 3.3 kV3.3\text{ kV}3.3 kV. Calculate the change in magnetic flux experienced by the secondary coil in a short time interval of 4.0 ms and state its unit. Assume that the output voltage from the transformer remains constant at 3.3 kV3.3\text{ kV}3.3 kV over this time interval.
