derivation of parallel combination
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refer to the pictures........... ❤
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Explanation:Voltage across each resistor is same and equal to the applied voltage.
→ Total current is equal to sum of currents through the individual reistances.
• I = I1 + I2 + I3
⇒ V/R = V/R1 + V/R2 + V/R3
→ Reciprocal of equivalent resistance is equal to sum of reciprocals of individual resistances.
1/Rp = 1/R1 + 1/R2 + 1/R3
→ Equivalent resistance is less than the value of the smallest individual resistance in the combination.
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