Question

solve to find the current

Answer 1

you can + all the value of resistors because here it is in series combination

Answer 2

The current in all three loops will be the same.

Answer: I1=I2=I3

Step by step explanation:

Solving all three circuits to find out the current in the three circuits.

circuit 1:

There are three loops;Equivalent resistance of the three loops

R and R in series ⇒ R+R= 2R

This 2R is parallel to the resistor of value 2R

1/2R+1/2R= 2/2R= R

On solving it again and again we will get AB as 2R and the remaining resistances as parallel with value 2R.

Circuit 2:

circuit has 5 loops and equivalent resistance of the five loops will be similar in calculation  as that of  circuit 1.

Hence the final equivalent resistance will be the same as the first one hence here current will be the same too.

circuit 3:  

This circuit has 8 loops.The calculation for equivalent resistance is the same and the end product will be the same as the other two loops.

here also the current will be the same.

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