Question

derive an expression for equivalent resistance when r1, r2 and r3 are connected in parallel with each other with the help of battery of electric potential V​

Answer 1

Answer:

Explanation:

Parallel Connection : In parallel connection of resistors there is same potential difference at the ends of the resistors. Hence the voltage in the circuit is equal to V. Let I1, I2 and I3 be the currents flowing through R1, R2 and R3 resistors respectively. Hence, we can write I = I1 + I2 + I3. According to the Ohm's law, (Here Req is the equivalent resistance) ∴ The equivalent resistance of a parallel combination is less than the resistance of each of the resistors.Read more on Sarthaks.com - https://www.sarthaks.com/532971/derive-expression-for-equivalent-resistance-three-resistors-which-connected-parallel