Question

In the circuit shown below, voltmeter $V_2$ reads $80volts$
What is the reading of voltmeter $V_1$ ?

• A. $160V$
• B. $40V$
• C. $80V$
• D. $20V$

Answer 1

The correct option is A $160V$

Answer is A.
According to Ohm's law, V=IR. Therefore, the voltage is directly proportional to the resistance.
In this case, the voltage in the voltmeter V2 across 20 ohms is 80 V, so the voltage in the voltmeter V1 across the 40 ohms resistance will be 160 V.
Hence, the reading of voltmeter V1 is 160 V.