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What is the minimum resistance which can be made using five resistance each of 1/5 ohm 1. 1/5ohm 2. 1/10ohm 3. 1/25 ohm 4.25 ohm

Posted by Chakali Akhilesh 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 4 months ago

When resistors are connected in parallel, the supply current is equal to the sum of the currents through each resistor. In other words, the currents in the branches of a parallel circuit add up to the supply current.

Also, they have the same potential difference across them. In other words, any components in parallel have the same potential difference across them. And, the total resistance will always be lesser than the least resistance in the circuit.

Put them all in parallel-

(1/R) = (1/(1/5)) + (1/(1/5)) + (1/(1/5)) + (1/(1/5)) + (1/(1/5))

= 5 + 5 + 5 + 5 + 5 = 25

R = 1/25 ohms

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CBSE > Class 10 > Science