Multiple choice

The strength of a magnetic field is affected by

(a) electric current (b) number of field lines (c) direction of field lines (d) direction of current

  1. Only a and b

  2. Only c and d

  3. Only a, b and c

  4. Only b, c and d

  5. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Yes, it is correct. The strength of a magnetic field increases with an increase in current. Crowded field lines show stronger magnetic field.

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