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Radio waves are energy. Electromagnetic energy to be exact. The amount of energy a radio wave has will depend on the amount of power the transmitter has, the amount of amplification, the quality of the cable connecting it to the antenna and finally the antenna. The amount of energy is usually measured in watts.

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11y ago
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11y ago

"Energy level of a radio wave" is a phrase with no physical meaning.

If you were to tell us the frequency of the wave, we could give you the energy of a single photon (or you could figure it out yourself; it's just the frequency times Planck's constant).

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14y ago

That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.

That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.

That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.

That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.

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14y ago

That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.

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Q: How many joules of energy go in a radio?
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