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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