given a circuit powered at 12V with R1, R2, R3 respectively of 10,20,30 Ohm, determine R4 in such a way that the Wheatstone brid

Question

3 years ago

6

ge is in equilibrium and then calculate voltages and currents as for reference exercise.

1 answer:

elena55 [62] · Answer 1 · 2022-08-07T19:23:54+03:00

Answer:

The balanced condition for Wheatstones bridge is

Q

P

=

S

R

as is obvious from the given values.

No, current flows through galvanometer is zero.

Now, P and R are in series, so

Resistance,R

1

=P+R

=10+15=25Ω

Similarly, Q and S are in series, so

Resistance R

2

=R+S

=20+30=50Ω

Net resistance of the network as R

1

and R

2

are in parallel

i=

R

V

=

50

6×3

=0.36 A.

Explanation: