In the ohmmeter in the figure (Figure 1), M is a 2.50-mA meter of resistance 65.0. (A

In the ohmmeter in the figure (Figure 1), M is a 2.50-mA meter of resistance 65.0Ω. (A 2.50-mA meter deflects full scale when the current through it is 2.50 mA.) Battery B has an emf of 1.52 V and negligible internal resistance. R is so chosen that when the terminals a and b are shorted (Rx=0), the meter reads full scale. When a and b are open (Rx=∞), the meter reads zero.

 

Part A

What is the resistance of the resistor R?

Part B

What current indicates a resistance Rx of 200Ω?

Part C

What value of Rx corresponds to the meter deflection of 1/4 of full scale if the deflection is proportional to the current through the galvanometer?

Part D

What value of Rx corresponds to the meter deflection of 1/2 of full scale?

Part E

What value of Rx corresponds to the meter deflection of 3/4 of full scale?

Transcribed Image Text:

(M) Твина a b www R Rx (M) Твина a b www R Rx

Answer rating: 100% (QA)

A gewens that terminah A and B full deflector RM ... View the full answer