Question

Your friend required 10 ohms resistance he came to you and asked for it you have only resistors having 40 ohms then atleast the number of resistors your friend seek to make 10 ohms is

Answer 1

Answer:

we have to arrange 4 resistors in parallel

Explanation:

1/R=1/40 + 1/40 + 1/40 + 1/40

therefore R=40/4=10 ohm