效 xiào effect; efficacy; to imitate
Made up of [交 jiāo to hand over; to deliver; to turn over , 攵 suī rap radical 66]Made with 10 strokes.
Jiao - the left part provides the rough phonetic, the 'rap' part suggests an action
Related characters
Also uses 交 jiāo component: 较 jiào (comparatively) 饺 jiǎo (dumpling) 郊 jiāo (suburbs) 胶 jiāo (to glue) 校 xiào (school) 咬 yǎo (to bite)
Also uses 攵 suī component: 放 fàng (let go) 故 gù (happening) 徽 huī (emblem) 教 jiào (religion) 教 jiāo (to teach) 散 sàn (to scatter) 攸 yōu (distant) 致 zhì (to send)