For Item, Numbers 30 And 21, Study The Figure Below:, Wire Was Placed Vertically In A Wooden Block Of Wood With A Compass Beside It Then Current Pass

For item

numbers 30 and 21, study the figure below:
wire was placed vertically in a wooden block of wood with a compass beside it then current pass through the wire
20. How the current in the wire affects the deflections of compass needle?
21. right and rule, what does the right thuaib indicato?

Answer:

Hello

Explanation:


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