A transformer used with Neon signs may have 50 turns for its primary and 2000 tu

Question

A transformer used with Neon signs may have 50 turns for its primary and 2000 turns for its secondary coil. If a 110 rms voltage is applied to its primary coil what will the rms output of the secondary be? If the primary coil of a transformer is connected by mistake to a dc source, what will happen? [a) nothing (b) excessive current will flow in the primary, possibly burning it out (c) excessive current will flow in the secondary. Suppose you have a long straight wire carrying current in the +x direction and a long straight wire carrying an equal current in the +y direction. Then the magnetic field will be zero in the xy plane, along the lines (a) x=y (b)x=-y (c) nowhere. The magnetic force on a charged particle will be non-zero (a) if the particle is moving in the field direction (b) is moving at right angles to the field direction (c) is not moving at all. A particle sent into a magnetic field at right angles with respect to its direction (a) will experience a force perpendicular to its direction of motion and perpendicular to the field direction (b) will experience no force, U) experience a force in the direction of the field.

Explanation / Answer

5) n2/n1= v2/v1

2000/50= v2/ 110

V2= 4400 V

6) excessive current will flow in secondary

8) F = q (V XB)

is moving at right angles to the field direction.

9) a) will experience a force perpendicular to its direction of motion and perpendicular to the field of direction

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