Question

4.
Four identical resistors of resistance 'R' are joined
in the form of a square. The resultant resistance
across the point AC & AD is &
respectively.
a) R & 4/3R
b) R & 3/4R
c) 4R & R
d) 2R & 4R​

Answer 1

Answer:

I am considering it to be a square ABCD each side has a resistance R

For Equivalent resistance between AC

Two resistors of resistance 2R are connected in parallel.

Equivalent resistance  1÷Req = 1÷2R + 1÷2R

Req=R

For AD two resistors of 3R and R are connected in parallel

Equivalent resistance 1÷Req= 1÷3R + 1÷R

Req =  3R/4

The equivalent resistance are R and 3R/4 respectively.