What magnetic field strength will allow the electrons to pass through without being deflected?

Explanation:

If magnetic field exists parallel  to the direction of motion of electron , no force will act on the electrons and hence there will be no deflection in them .

In such cases , the magnitude of magnetic field is immaterial . No matter how high or low magnitude of magnetic field be , if it is parallel to the velocity of electron , it will not be deflected as the force created on them will be zero.

Only in case magnetic field  makes some angle with the direction of velocity , force will be created and electron will be deflected .

causes

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human population grows worldwide

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