Force that opposes the motion of any object even when no other external force is applied is called _____.
A
electric current
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B
magnetic force
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C
frictional force
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D
mechanical force
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Solution
The correct option is B frictional force Frictional force always acts in direction opposite to that of the applied force. The irregularities between the two surface lock into each other, thus opposing any further motion even when no external force is applied to stop the moving body.