The Power by Naomi Alderman

The world quickly changes when teenage girls everywhere discover they have the power to electrocute others with a simple touch.

The Amulet of Samarkand by Jonathan Stroud

Nathaniel is an ambitious young magician who summoned a 5000 years old Djinni for some petty revenge. Little did he know, he would end up tangled in some dangerous political plot against his will.