Question

a) Ten 2 Ω resistors are given If all are used what is the resistance?
b) If the same resistance is to get, how many 100Ω rsistors are connected in parallel. Pls someone help fast!

Answer 1

Answer:

In general, for n EQUAL resistors connected in PARALLEL where each one has a resistance of R ohms; the total resistance IS ALWAYS given by R/n ohms.

For example, 20 50 ohm resistors connected in parallel will an effective resistance of 50/20 = 2.5 ohms.

Consequently, two 1 ohm resistors in parallel have a total or effective resistance Rt = 1/2 = 0.5 ohms.

OR for TWO resistors in parallel:

Rt = R1*R2/(R1+R2) = 1*1 / (1 + 1) = 1/2 = 0.5 ohms