wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Why is the earth pin thicker and longer than the live and the neutral pins? What is the advantage of earth wire connection in domestic appliances? [3 MARKS]


Open in App
Solution

Each point: 1 Mark

1. It is thicker beacuse a large cross sectional area as compared to other pins makes its resistance lower than other pins so that in case of any short circuit, the excess current flows through the earth pin.
2. It is made longer so that it gets connected to the earth terminal earlier than the live and neutral pins. This ensures the safety of the user.
3. Earth wire is connected to the metallic case of an electrical appliance to protect from electric shock by transferring excess amount of current to the earth.


flag
Suggest Corrections
thumbs-up
4
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Powerful Current
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon