Question

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Answer 1

1. Potential difference across AB:

V = IR

= 1 × 5

= 5v

Potential difference across AC:

Total resistance = 5 + Rp

1 / Rp = 1 / 10 + 1 / 15

Rp = 6 ohm

Total resistance = 5 + 6 = 11 ohm

V = 1 × 11 = 11v

2. Current splits across 10 & 15 ohm

Let's first calculate voltage across BC

V = 1 × 6 = 6v

Now current across 10 ohm is

I = 6 / 10 = 3/5A

current across 15 ohm is

I = 6 / 15 = 2/5A

3. Total resistance = 11 ohm (calculated above)