Question

For corona discharge, the conductor should have a

• A. Spherical end
• B. Flat end
• C. Pointed end
• D. Concave end

Answer 1

The correct option is C Pointed end

If the pointed tip is charged intense electric field arises near the tip.The free electron present in the air produced by ionising radiation which gets accelerated by this field. If suppose positive charges are present at the tip then it will attract an equal amount of negative charge and it will be neutralized. This process by which the pointed ends get discharge is called corona discharge