Final answer:
The time difference between the zero crossings on an ac voltage-versus-time graph is called the period. In Europe, the standard frequency of ac voltage is 50 Hz, which means the voltage completes 50 cycles per second. The period can be calculated using the formula Period = 1 / Frequency, where Frequency is given in hertz (Hz).
Step-by-step explanation:
In a European ac voltage source, the time difference between the zero crossings on an ac voltage-versus-time graph is called the period. The period is the amount of time it takes for the voltage to complete one full cycle, going from one zero crossing to the next.
In Europe, the standard frequency of ac voltage is 50 Hz. This means that the voltage completes 50 cycles per second. The time difference between the zero crossings on an ac voltage-versus-time graph is called the period.
In Europe, the standard frequency of ac voltage is 50 Hz, which means the voltage completes 50 cycles per second. The period can be calculated using the formula Period = 1 / Frequency, where Frequency is given in hertz (Hz). To find the period, we can use the formula: Period = 1 / Frequency.
Using this formula, we can calculate the period as: Period = 1 / 50 Hz = 0.02 seconds.