Materials that block flow of electrons are called _____?

Materials that block flow of electrons are called _____?

الیکٹران کے بہاؤ کو روکنے والے مواد کو کیا کہا جاتا ہے؟
Explanation

Materials that block the flow of electrons are called insulators.

They have high resistance and prevent electrical current from flowing through them.

Such as rubber or glass.