A 50 watt, 8 ohm speaker requires 20 volts to drive it to full power. Watts equals volts and amps, while volts equals amps times ohms.
However, the 8 ohm rating is actually a minimum rating, and depends on frequency. Also, driving a speaker to full power on a continuous basis is not good for the speaker. (Or for the ears, either.)
An audio speaker is usually powered only by the audio signal that comes via the leads from an audio amplifier. The average power in an audio signal is usually about 1% of the peak power, and even with loud music the average power is only ¼ watt or less. But the amplifier must be designed to supply the peak audio power and amplifiers are usually rated at 25-50 watts.
To determine the amperage required by a 12-volt audio radio, you would need to know the power consumption of the radio in watts. You can then use the formula: Amps = Watts / Volts to calculate the amperage.
Watts and Volts are different units. It is like asking how many apples are there in 6 oranges. Watts = Volts x Amps x Power Factor Power Factor ranges from zero to one.
Typically, a ss-wg450 subwoofer requires an external amplifier to provide power for operation. The voltage required would depend on the specifications of the amplifier being used, which might be in the range of 12-24 volts for car audio systems or 120 volts for home audio setups. It's important to refer to the subwoofer's manual or contact the manufacturer for the specific voltage requirements.
To calculate the power in watts, you will also need to know the current in amperes. The formula to calculate power is P (watts) = V (volts) x I (amperes). If you only have the voltage (30 volts) and not the current, you cannot determine the power in watts.
An audio speaker is usually powered only by the audio signal that comes via the leads from an audio amplifier. The average power in an audio signal is usually about 1% of the peak power, and even with loud music the average power is only ¼ watt or less. But the amplifier must be designed to supply the peak audio power and amplifiers are usually rated at 25-50 watts.
230 volts
To determine the amperage required by a 12-volt audio radio, you would need to know the power consumption of the radio in watts. You can then use the formula: Amps = Watts / Volts to calculate the amperage.
There are no volts in a light. A light consumes power.
You require about 24 volts to power the windshield wiper.
Onions don't have volts.
6.3
none is magic
200
Watts and Volts are different units. It is like asking how many apples are there in 6 oranges. Watts = Volts x Amps x Power Factor Power Factor ranges from zero to one.
voltage meter
"Power (/Watts) = Current (/amps) * Potential Difference (/volts)" Therefore, power = 7 * 12 = 84 W