EFFECTS OF CURRENT

Open Circuit:                     An incomplete electrical circuit in which no current flows.

Close Circuit:     A complete electrical circuit around which current flows.

EFFECTS OF CURRENT

Electricity is the most widely used form of energy we cannot see electricity, but we can see its effects. The Electricity can produce different types of effects. Basically the effect of electricity is conversion of Electrical energy into other form of energy, such as Light, Heat etc. When electric current flows in a circuit, it produces various effects such as

·         Heating Effects of current

·         Magnetic effect of current

·         Chemical effect of current

·         Effect of current on body

·         Lighting effect of current

Effect of Current on Body:

Three primary factors affect the severity of the shock a person receives when he or she is a part of an electrical circuit:

§  Amount of current flowing through the body (measured in amperes).

§  Path of the current through the body.

Length of time the body is in the circuit.

Table demonstrates this general relationship for a 60-cycle, hand-to-foot shock of one second's duration:

Current level (Milliamperes)	Probable Effect on Human Body
1 mA	Perception level. Slight tingling sensation. Still dangerous under certain conditions.
5mA	Slight shock felt; not painful but disturbing. Average individual can let go. However, strong involuntary reactions to shocks in this range may lead to injuries.
6mA - 16mA	Painful shock, begin to lose muscular control. Commonly referred to as the freezing current or "let-go" range.
17mA - 99mA	Extreme pain, respiratory arrest, severe muscular contractions. Individual cannot let go. Death is possible.
100mA - 2000mA	Ventricular fibrillation (uneven, uncoordinated pumping of the heart.) Muscular contraction and nerve damage begins to occur. Death is likely.
> 2,000mA	Cardiac arrest, internal organ damage, and severe burns. Death is probable.

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