Five 60 ohm resistors are connected in parallel. What is their equivalent resistance?

12 ohms

Explanation:

The five 60 Ohms resistance can be represented as follows:

R1 = 60 Ohms

R2 = 60 Ohms

R3= 60 Ohms

R4 = 60 Ohms

R5 = 60 Ohms

Rt =?

Since they are in parallel connections, the equivalent resistance (Rt) can be calculated as follows :

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

1/Rt = 1/60 + 1/60 + 1/60 + 1/60 + 1/60

1/Rt = ( 1+1+1+1+1)/60

1/Rt = 5/60

1/Rt = 1/12

Cross multiply to express in linear form

Rt = 12 ohms

Therefore the equivalent resistance is 12ohms