Question

Three resistors, rated 10 ohms, 15 ohms, and 12 ohms are connected in parallel with a battery of 20V. calculate: (i) total resistance of the circuit. (ii) total current flowing through the circuit .

Answer 1

Answer:

eff resistance is

1/10+1/15+1/12=1/r

440/1700=1/r

r=170/44

w.k.t

v=it

given v=20v

r=170/44

so

20=i(170/44)

i=20(44/170)

=5.17(approx)