Question

Two identical wires, each having a resistance of 1 ohm, are connected in parallel. The combination will have a resistance of:

a) 0.5 ohms
b) 1 ohm
c) 2 ohms
d) 3 ohms

Answer 1

When two identical resistors are connected in parallel, the equivalent resistance is 0.5 ohms. Therefore, the correct option is A.

Step-by-step explanation:

When two identical resistors are connected in parallel, the formula for calculating the equivalent resistance is given by:

1/Req = 1/R1 + 1/R2

Substituting the resistance value of 1 ohm for both resistors, we get:

1/Req = 1/1 + 1/1

1/Req = 2/1

Req = 1/2

Therefore, the combination of two identical wires each having a resistance of 1 ohm connected in parallel will have a resistance of 0.5 ohms.