What is the total resistance of five 10 ohms resistors in life parallel ... a) 500 ohms

B) 2 ohms

C) 10 ohms

D) 50 ohms?

Answer: B

R = 2 ohms

Explanation:

When resistors are connected in parallel, the equivalent resistance R will be less than the least resistance.

1/R = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5

Since the 5 resistors are 10 ohms each, substitute them in to the formula

1/R = 1/10 + 1/10 + 1/10 + 1/10 + 1/10

The LCM = 10

1/R = 5/10

Reciprocate both sides

R = 10/5 = 2 ohms

The correct option is B