A portable x-ray unit has a step-up transformer. The 120 V input is transformed to the 100 kV output needed by the x-ray tube. The primary has 61 loops and draws a current of 14.1 A when in use. What is the number of loops in the secondary?

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A generator coil is rotated through one-fourth of a revolution (from = 0 to = 90) in 19 ms. The 175-turn circular coil has a 4.4 cm radius and is in a uniform 1.36 T magnetic field which initially is pointing along the normal of the coil. What is the magnitude of the average emf (in V)induced?

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The primary coil of a transformer makes 240 turns around the iron core and the secondary coil of that transformer makes 80 turns. If the primary voltage is 120V, what is the secondary voltage (in V)?

Enter an integer.