Exercise $2$

Follow the instructions written below for PART A and PART B of Exercise $2$:

PART A: What is the direction of current $($I$)($in the straight wire or in a coil$)$ if based on the given direction of magnetic field lines vec$(B)$ or based on the given poles of the magnet located $($inside$)$ in the coil?

PART B: What is the direction of magnetic field lines $(vec(B))($or how are the magnetic poles of a magnet $($inside$)$ in the coil oriented$)$ if based on given direction of current?

Current direction: convention $($positive electric charges move$).$ All exercises are about the existing current, not the induced current.

Part A: Score: $(6\mathrm{.}05p)$

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