Question

9. The potential difference across the 3 12 resistor in the following diagram is:

(a) 1/9 V
(b) 1/2 V
(c) 2V
(d) IV​

Answer 1

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Answer. = 1V

First find total current flow in the circuit, Current = Potential difference \ Total resistance. All resistance are connected in series combination so Total resistance is equal to summation of all resistance. ... so Potential difference across 3 ohm resistor V = 3*1/3 = 1 Volt.