Subject :NSO Class : Class 7
Four identical bulbs are connected to a circuit as shown in the given figure. Due to fluctuations in the voltage, the bulb B3 blows off.
(A voltmeter measures voltage and it allows almost no current to pass through it.) Now consider the following statements.
I. Reading of the voltmeter V1, after the blowing off is 20 V.
II. Reading of the voltmeter V2, after the blowing off is zero.
III. Reading of voltmeter V1, before the blowing off is 4 V.
IV. Reading of voltmeter V2, before the blowing off is 5 V.
The incorrect statements are
AII and III only
BI, II and III only
CII, III and IV only
DI and III only.