Question 16 of 20 : Select the best answer for the question.
16. The symbol shown in the figure is placed near the supply terminals of a schematic
diagram. This shows that supply current is
O A. pulsating.
O B. alternating.
O C. direct.
O D. rectified.
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explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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