Physics · Current Electricity
In an electrical circuit, a resistor r1 is connected in series with a parallel combination of two resistors r2 and r3. If i1 is the total current entering the combination and i3 is the current flowing specifically through resistor r3, then the ratio i3i1 of the currents in terms of the resistances is given by:
- 1r2r1 + r3
- 2r1r2 + r3
- 3r2r2 + r3✓
- 4r1r1 + r2
Correct answer
r2r2 + r3
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