A wire carrying current I, bent as shown in the figure, is placed in a uniform field B that emerges normally out from the plane of the figure. The force on this wire is ______________.
Fill in the blank with the correct answer from the options given below
1
4BIR, directed vertically downward
2
3BIR, directed vertically upward
3
BI (2R + πR), vertically downward
4
2π BIR, from P to Q