6. Flemings left hand rule

1. Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)

When a proton enters the region of magnetic field, it experiences electric forceexperiences magnetic forcedoes not experience magnetic forceexperiences static force . Due to which the path of the proton becomes straighterupwardcircularopposite. As a result, the properties of a proton change.

 

2. A positively charged particle is fired westward and experiences a deflection toward the north because of a magnetic field. Determine the field’s direction.

 

The direction of the magnetic field can be determined using the Right-hand thumb ruleFleming’s Right-hand ruleFleming’s Left-hand rule.

 

According to the rule, if we arrange our thumb, forefinger and the middle finger of the left hand right perpendicular to each otherright-hand right perpendicular to each other, then the thumb points towards the direction of the magnetic fieldmagnetic forcecurrent, the middle finger the direction of magnetic fieldmagnetic forcecurrent and the forefinger the direction of magnetic forcemagnetic fieldcurrent.

 

Since the direction of positively charged particle is towards west, the direction of the current will also be towards the west. The direction of the magnetic force is towards the north, hence the direction of magnetic field will be downwardtowards southtowards eastupward according to Fleming’s Right-hand ruleRight-hand thumb ruleFleming’s Left-hand rule.