Final answer:
In a series LC circuit with a capacitor voltage drop of 170 volts and an inductor voltage drop of 50 volts, the total voltage is 120 volts.
Step-by-step explanation:
In a series LC circuit, the voltage drops across the capacitor and inductor are out of phase by 180 degrees. The total voltage in the circuit is calculated by taking the difference between the voltages since they oppose each other. So, if the capacitor drops 170 volts and the inductor drops 50 volts, the total voltage would be the difference between these two values, which is 170 volts - 50 volts = 120 volts.