Saturday 16 February 2013

Resistance



Some important points about resistance:


1.     Whenever current flows through a resister, potential drops.

2.     In parallel combination of resistances, potential difference remains same.

3.     The equivalent resistance of a parallel combination is always less then smallest resistive element value.

4.     If we want to reduce the overall resistance, then we should use parallel combination.

5.     With the help of parallel combination, we can extract more current from a source.

6.     In series combination of resistances, total current remains same.

7.     The equivalent resistance of series combination is always greater than the greatest resistance value

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