EXPLAIN YOUR ANSWERS 1.(19) What are the two major hazards of electricity? 2. (2

Question

EXPLAIN YOUR ANSWERS 1.(19) What are the two major hazards of electricity? 2. (21) What determines the severity of a shocok? Can you say that a certain voltageis without further information? 3.(24.) Some devices often used in bathrooms, such as hairdryers, often have safety messages saying "Do not use when the bathtub or basin is full of water.* Why is this so? 4. (25.) We are often advised to not flick electric switches with wet hands, dry your hand first. We are also advised to never throw water on an electric fire. Why is this so?

Explanation / Answer

(1) The two major hazards of fire are contact with live wire causing shock and burns and faults which could cause a fire.

(2) The severity of the shock depends on voltage. Voltage levels above 50 Volts cause dangerous amounts of current flow through the human body.

(3) Because if the hair dryer falling into a water body which is in contact with a person may cause electrocution.

(4) Throwing water on an electric fire will cause a short circuit and will intensify the fire further. Touching electric switches may lead to electrocution.

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