The speedometer in the Audi Quattro 20V is likely original, as it would have been installed by the manufacturer when the car was first produced. However, it is possible that the speedometer has been replaced with an original part if the original one was damaged or malfunctioning. To confirm whether the speedometer is original, one would need to verify the vehicle's maintenance and repair history. **

No, a normal teenager would not be able to survive a current of 325A and 20V. This level of electrical current and voltage is extremely high and could result in severe injury or even death. It is important to always exercise caution around high voltage and current electrical systems and to seek professional help when dealing with such dangerous levels of electricity. **

When two ohmic resistors are connected in parallel to a voltage source of 20V, the voltage across each resistor will be the same, 20V. This is because the voltage is constant in a parallel circuit. The current flowing through each resistor will depend on the resistance of each resistor. The total current drawn from the voltage source will be the sum of the currents flowing through each resistor. **

When 10 20V candles are connected in series and plugged into an outlet, the total voltage across the entire series is still 20V. This means that each candle is only experiencing a fraction of the total voltage, allowing them to operate within their voltage rating and not burn out. In a series circuit, the current is the same throughout, so each candle receives the same current, further preventing them from burning out. Therefore, the candles do not burn out because they are operating within their voltage and current limits when connected in series. **

A radio can be operated with a 12V power supply by directly connecting it to the radio's power input, as long as the radio's power requirements are within the 12V range. If the power supply is 20V, a voltage regulator can be used to step down the voltage to 12V before connecting it to the radio. This will ensure that the radio receives the correct voltage and does not get damaged by the higher voltage. It's important to always check the radio's specifications to ensure that the power supply is compatible with the device. **

To generate sparks of equal size with a direct voltage of 20V, you can use a spark gap with a specific distance between the electrodes to control the spark size. For the alternating voltage, you can use a transformer to convert the 20V direct voltage to an alternating voltage of the same magnitude. By adjusting the parameters of the spark gap and ensuring the transformer output is stable, you can generate sparks of equal size with both the direct and alternating voltages. **

Yes, you can charge your Huawei P30 Pro with a 5V, 9V, 12V, 15V, or 20V 3A input. The Huawei P30 Pro supports multiple input voltages and can adjust its charging speed accordingly. It is designed to be compatible with various charging voltages and currents to provide flexibility and convenience for users. **

To generate sparks of the same size with a direct voltage of 20V and an alternating voltage, you would need to ensure that the peak voltage of the alternating voltage is also 20V. This can be achieved by setting the peak-to-peak voltage of the alternating voltage to 40V, as the peak voltage of an alternating voltage is √2 times the RMS voltage. By adjusting the peak-to-peak voltage of the alternating voltage to match the direct voltage, you can generate sparks of the same size with both types of voltage sources. **