Q585
What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?
A.
50
B.
12
AnswerC.
24
D.
36
Answer: Option B
Solution
Answer: Option B
Solution:
according to rules
1/R = 1/R1 + 1/R2 (for parallel)
=1/20 + 1/30
=12 ohm