Question

If a voltage of 6 V is impressed across the circuit in the preceding question, and the voltage across the first lamp is 2 V, what is the voltage across the second lamp?

A) 2 V
B) 3 V
C) 4 V
D) 6 V

Answer 1

The voltage across the second lamp can be found by subtracting the voltage across the first lamp from the total voltage.

Step-by-step explanation:

According to Kirchhoff's voltage law, the sum of the voltage drops across the two lamps should equal the total voltage impressed across the circuit. In this case, the total voltage is 6V, and the voltage across the first lamp is 2V. Therefore, the voltage across the second lamp can be found by subtracting the voltage across the first lamp from the total voltage:

Voltage across second lamp = Total voltage - Voltage across first lamp

Voltage across second lamp = 6V - 2V = 4V

Therefore, the voltage across the second lamp is 4V.