Question

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Your teacher has shown you the following table structure:
(Attachment)

In your opinion which column header should be chosen as the primary key for this table? Please note that the column header ID is inserted by default. Hence, do not include this in your answer.

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Answer 1

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The direction of magnetic field at the centre

of the circular loop depends on whether the

current in the loop flows in clockwise or

anticlockwise direction.When the current is in

clockwise direction, the magnetic field goes

into the side of wall.

when current is in clockwise direction the

direction of magnetic field (B) is towards

the circuit on the other hand when current

is in anticlockwise direction the direction of

magnetic field (B) is outwards the circuit.

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Answer 2

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The direction of magnetic field at the centre of the circular loop depends on whether the current in the loop flows in clockwise or anticlockwise direction.When the current is in clockwise direction, the magnetic field goes into the side of wall. when current is in clockwise direction the direction of magnetic field (B) is towards the circuit on the other hand when current is in anticlockwise direction the direction of magnetic field (B) is outwards the circuit.