Physicsmedium · Past Paper
Two resistors of 10 Ohms and 10 Ohms are connected in parallel. What is their combined resistance?
A20 Ohms
B10 Ohms
C5 Ohms
D100 Ohms
✓ Correct Answer: C — 5 Ohms
In parallel: 1/R = 1/R1 + 1/R2. 1/R = 1/10 + 1/10 = 2/10. R = 10/2 = 5 Ohms.
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