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【单选题】
某N匝线圈放在匀强磁场B中,线圈的面积为S,线圈平面的法线与磁场的夹角为θ,当线圈中通入电流为I时,线圈所受的磁场力矩M为A.
M = BIScosθ
B.
M = NBIScosθ
C.
M = BISsinθ
D.
M = NBISsinθ
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