A non-conducting, non-magnetic cylindrical object of massm and carrying a static charge of Q is placed inside a longsolenoid that is carrying a constant current I.Both the solenoid and the cylindrical object are motionlessto begin with. Then, the current in the solenoid is turnedoff, and the cylindrical object begins to rotate. Which ofthe following statements is correct?The solenoid must also rotate in the opposite direction as thecylindrical object in order to conserve angular momentumThe solenoid must also rotate in the same direction as thecylindrical object in order to conserve angular momentumO The solenoid will remain motionless even though thecylindrical object has begun to spinO The rotation of the cylindrical object must have been causedby a source of torque external to the solenoid

It is given that a non magnetic cylinder of charge Q is kept inside the solenoid and then the…

Answered: A non-conducting, non-magnetic…

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