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A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil. lf the input voltage is 100 volts, the output voltage is

a.

10 volts

b.

5 volts

c.

15 volts

d.

20 volts

Which of the following pairs of light rays shows the widest separation in the spectrum of white light?

a.

Green and yellow

b.

Blue and red

c.

Indigo and violet

d.

Orange and red

If two parallel conductors carry current flowing in the same direction, the conductors will

a.

Repel each other

b.

Attract each other

c.

Both move in the same direction

d.

Have no effect on each other

When the speed a car is halved, its kinetic energy is

a.

doubled

b.

quartered

c.

halved

d.

quadrupled

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