In the circuit given below:


(a) What is the combined resistance?


(b) What is the p.d. across the combined resistance?


(c) What is the p.d. across the 3 Ω resistor?


(d) What is the current in the 3Ω resistor?


(e) What is the current in the 6 Ω resistor?

A

The resistors of 6 ohm and 3 ohm are connected in parallel. Therefore, their combined resistance can be calculated as




R= 2 ohms


(b) The p.d. across the combined resistance, V= IR


Here I = 6A and combined resistance = 2 ohms.


So, V= 6 x 2 = 12 V


(c) In parallel connection potential difference remains constant, so Potential difference across 3ohm resistor =12 V


(d) The current in the 3Ω resistor


I= V/R1


I= 12/3 =4A


(e) Current flowing through the 6 ohm resistor = V/R2 = 12/6 = 2 A


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