Question

3. If 2ohm, 4ohm and 8ohm resisters are connected in parallel and 12v potential
difference is applied
A. Find out the effective resistance
(3 marks)
B. What is the current in the circuit
(3 marks)
circuito​

Answer 1

Answer:

let effective resistance be R'

A. effective resistance = 1/R1 + 1/R2+1/ R3 [ series combination]

1/R'= 1/2 + 1/4 + 1/8

1/R' = (4+2+1)/8

1/R'= 7/8

R' = 8/7

= 1.14ohm

B. Potential difference= 12v

Resistance = 1.14ohm

current in circuit= V/R

= 12/1.14

= 10.52A