Question

(a) With the help of a diagram, derive the formula for the resultant resistance of

three resistors connected in parallel.

(b) In the circuit diagram shown below find:

(i) Total resistance.

(ii) Current shown by the ammeter A.​

Answer 1

Answer:

1/R=1/R1+1/R2+1/R3

Explanation:

total resistance=1/5+1/5=2/5 =5/2=2.5ohm current=4/2.5=8/5=1.6A