Question

Find the equivalent resistance of three resistors of resistance 10 OHM , 20OHM and 40OHM when connected in (1) series(2) parallel? ​

Answer 1

Answer:

in series-

R= r1 + r2 + r3

R=10+200+400

R=610 ohm

in parallel-

R=1/r1 + 1/r2 + 1/r3

R= 1/10 + 1/200 + 1/400

R= 0.1 + 0.005 + 0.0025

R= 0.1075 ohm