QUESTION 3 A wire is placed in an external magnetic field. When the wire is hook

Question

QUESTION 3 A wire is placed in an external magnetic field. When the wire is hooked up to a battery, the current flows from left to right. The wire is deflected up. What is the direction of the magnetic field? o a Out of the page b.Up O C.Down O d. Into the page QUESTION 4 A 10cm long wire carrying 2 amps of current is placed in . magnetic filed whose magnitude is 20 ? Ttothe right The current runs from up to down. What is the direction and magnitude of the magnetic force? oa4X10-6N out of the page b.2x108 N out of the page 2X108N going into the page d 4x10-6 N going into the page

Explanation / Answer

According to Fleming left hand rule direction of magnetic field will be into the page

F = BILsin90= BIL= 20×10^-6 × 2× 0.1 = 4×10^-6 N out of the page

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