Grind the battery with your fingers and put it on it. What is the reason why the coin is spinning?

Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate. Because of the electromagnetic field, coins will rotate.