Question

Total magnetic induction () at O is:

• A. (p -f)
• B. (p + f + tan f) (- )
• C. (p - f + tan f) (- )
• D. (p - f - tan f)

Answer 1

Answer: (C)

(p - f + tan f) (- )

Answer 2

due to CE

$\overrightarrow { \mathrm { B } } _ { \mathrm { CE } }$ = $\frac { \mu _ { 0 } \mathrm { I } } { 4 \pi \mathrm {~d} }$ [sin f₁ + sin f₂] (- )

$\overrightarrow { \mathrm { B } } _ { \mathrm { CE } }$ = × 2 sin f

= (- ) B due of arc CFE

= = (- ) = (p - f) (- )

\f0 = (tan f + p - f) ( -)