Frequency doesn't depend on either voltage or current.
You just need the voltage and the current. Watts = Amps x Volts.
Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.
Leading and lagging currents are not so much "currents" as they are "situations" or "conditions" in an electrical circuit. Reactive characteristics, if there are any, will not let voltage and current be in phase in a circuit. (Unless they are equal, and this will be true at only one frequency.) In some circuits, current leads voltage (or voltage lags current), and in other circuits, current lags voltage (voltage leads current), depending on the circuit and also on the frequency of the applied signal. In a capacitor, current leads voltage, and in an inductor, current lags voltage. This carries over to circuits that exhibit primarily capacitive or inductive characteristics. Additionally, reactance varies with frequency. As a given circuit with inductance and capacitance is evaluated, at some frequencies, it will appear capacitive, and current will lead voltage. At other frequencies, the circuit will appear inductive, and current will lag voltage. Only at a frequency where the reactances are equal will the current and voltage be in phase. The ideas here are best reviewed after achieving an understanding of the nature of inductance and capacitance, the associated reactances, and the way frequency affects these characteristics.
It depends on the periodic time of the supply which, in turn, is determined by the supply frequency. So, work out the periodic time of a 50 or 60-Hz waveform, and go from there.
I depends on the voltage.
The maximum value of the current in an AC circuit depends on the frequency of the voltage source. As the frequency increases, the maximum current value also increases.
Voltage at secondary coil depends on differentiation of current at primary coil. In case of sinusoidal current, differentiation leads to sinusoid with same frequency, thus frequency does not change.
The frequency is changed by varying its speed, and the the voltage is changed by varying its field current.
Backing voltage in a photovoltaic cell depends on the light frequency because different frequencies of light correspond to different energy levels of photons, which can determine the voltage generated. However, intensity only affects the current generated by the cell, not the voltage. So, the higher the frequency of the light, the higher the backing voltage, regardless of the intensity.
You just need the voltage and the current. Watts = Amps x Volts.
Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.
Voltage and frequency are related in AC (alternating current) systems. In AC circuits, voltage is directly proportional to frequency according to the formula V = 2πfL where V is voltage, f is frequency, and L is inductance. This relationship is important in analyzing and designing electrical systems.
Leading and lagging currents are not so much "currents" as they are "situations" or "conditions" in an electrical circuit. Reactive characteristics, if there are any, will not let voltage and current be in phase in a circuit. (Unless they are equal, and this will be true at only one frequency.) In some circuits, current leads voltage (or voltage lags current), and in other circuits, current lags voltage (voltage leads current), depending on the circuit and also on the frequency of the applied signal. In a capacitor, current leads voltage, and in an inductor, current lags voltage. This carries over to circuits that exhibit primarily capacitive or inductive characteristics. Additionally, reactance varies with frequency. As a given circuit with inductance and capacitance is evaluated, at some frequencies, it will appear capacitive, and current will lead voltage. At other frequencies, the circuit will appear inductive, and current will lag voltage. Only at a frequency where the reactances are equal will the current and voltage be in phase. The ideas here are best reviewed after achieving an understanding of the nature of inductance and capacitance, the associated reactances, and the way frequency affects these characteristics.
60 Hertz
Current lags voltage in an inductive circuit. The angle by which it lags depends on the frequency of the AC, and on the relative size of the inductance compared to the resistance in the circuit.
Ohms Law says that Voltage = Current * Ohms, so the twothings that can affect the voltage in a circuit are Current and Ohms. If have a non resistive impedance, i.e. a capacitor or inductor forming a reactance, then frequency can also affect the voltage but, mathematicaly, reactance is a frequency domain form of impedance, so my answer stands - Current and Ohms.
Ohm's Law: Current = Voltage times resistance, hence current is directly proportional to voltage.