25) Which material is used for making wire wound resistors?

26) Which is the example for metal film resistor?

27) What is the reading of galvanometer in whetstone bridge at balanced stage?

28) What is the condition, if zero current is flowing through the galvanometer in Wheatstone bridge?

29) Calculates the value of unknown resistance (R) is connected in a wheat stone bridge at balanced conditions, if P = 350 Ohm , S = 200 Ohm and Q = 420 Ohm?