Question

when 4 ohm, 6 ohm and 8 ohm are connected in circuit, find maximum and minimum resistance .​

Answer 1

Answer:

Maximum = 18 ohm

Minimum= 1.85 ohm

Explanation:

Maximum resistance is obtained when they are connected in series and minimum is obtained when they are connected in parallel circuit combination.

Since, in series combination

R(equivalent)= (4+6+8)ohm

=18 ohm

Since, in parallel combination

1/R(equivalent)=(1/4)+(1/6)+(1/8)

therefore, R(equivalent)= 24/13

=1.85 ohm

Answer 2

Answer:

Maximum resistance =>4+6+8 ohm =>18 ohm

Minimum resistance => 24/13 ohm => 1.8461538 ohm => 1.8462 ohm

Explanation:

Maximum resistance is obtained by Connecting all three resistances in series => R=4+6+8 =18 ohm

Minimum resistance is obtained by connecting all three resistances in parallel => 1/R =1/4+1/6+1/8 =>1/R = 6/24+4/24+3/24 => 1/R = 13/24 => R =24/13 ohm . Hope it helps you.