Question 1: figure Question 2: Which is the correct way to use a voltmeter to me

Question

Question 1: figure

Question 2:

Which is the correct way to use a voltmeter to measure the voltage across the light

question 3:

Two identical light bulbs, 1 and 2, are positioned in the circuit below. A, B, C, and D mark positions in the circuit; they do not represent any objects in the circuit. Which of the following statements about the circuit is NOT true?
a. The current through A is the same as the current through C

b. The voltage between A and B is the same as that between C and D    

c. The current through C is the same as the current through D

d. The voltage between B and C is the same as that between C and D

Explanation / Answer

Question 1 :

R3/R4 = R1/R2

190 / R4 = 143/143

R4 = 190

Question 2 :

we connect the Voltmeter in parallel only since in parallel Voltage remains same and Voltemeter is used to measure the Voltage.

In C and D , Voltmeter is in parallel with the bulb. while connecting the voltmeter, we connect the positive terminal of voltmeter with high voltage end and negative terminal at low voltage end. hence the correct connection of voltmeter is denoted by option D

So Option D

Question 3 :

b. Not true

The voltage between A and B is different from the Voltage between C and D because the resistance between A and B is different from the resistance between C and D,

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