Question

Net magnetic field at the centre ofthe circle $O$ due to a current carrying
loop as shown in figure is $(\theta <{180}^o)$

• A. zero
• B. perpendicular to paper inwards
• C. perpendicular to paper outwards
• D. is perpendicular to paper inwards if $\theta \le {90}^0$ and perpendicular to paper outwards if ${90}^0$ $\le \theta <{180}^o$

Answer 1

The correct option is C perpendicular to paper outwards

By applying right hand thumb rule, The magnetic field

inside the loop is inward . Therefore, for any point outside

the loop magnetic field is opposite to inside. Therefore Magnetic

Field at Center is Outward.

Hence, Option C is answer.