Harry Potter's Patronus Charm

Harry Potter's Patronus Charm trivia questions

1. What form does Harry Potter's Patronus take?
2. What is the Patronus charm primarily used to defend against?
3. In which book does Harry first successfully cast a full Patronus?
4. What is Dumbledore's Patronus form?
5. How many Patronuses does Voldemort possess?
6. What is the Patronus form of Aberforth Dumbledore?
7. Who teaches Harry Potter how to cast the Patronus Charm?
8. What form does Severus Snape's Patronus take, and why is it significant?
9. What is the incantation used to cast the Patronus Charm?
10. What form does Hermione Granger's Patronus take?