A series circuit contains a generator two devices and connecting wires. The resistances of the two devices are 15 ohms and 10 ohms. The voltage supplied by the generator is 75 V. What will be the volt?

In a series circuit, the total resistance is the sum of the individual resistances, so ( R_{total} = 15 , \Omega + 10 , \Omega = 25 , \Omega ). Using Ohm's Law (( V = IR )), we first find the total current: ( I = \frac{V}{R_{total}} = \frac{75 , V}{25 , \Omega} = 3 , A ). The voltage across each device can be calculated as ( V_1 = I \cdot R_1 = 3 , A \cdot 15 , \Omega = 45 , V ) for the first device and ( V_2 = I \cdot R_2 = 3 , A \cdot 10 , \Omega = 30 , V ) for the second device.