Balance condition can be obtained by _________
A. varying the standard resistance R3
B. varying the resistance arms R1 and R2
C. keeping the unknown resistance R4 constant
D. by making use of a null detector
Answer:B
Balance condition can be obtained by _________
A. varying the standard resistance R3 B. varying the resistance arms R1 and R2 C. keeping the unknown resistance R4 constant D. by making use of a null detector