A transistor radio is operated by a source voltage of 12 volts. If the resistance of the component is 4 Ohms, calculate the power rating of the radio.

Answer 1

To calculate the power rating of the radio, we can use the formula:

Power (P) = (Voltage)^2 / Resistance

Given:
Voltage (V) = 12 volts
Resistance (R) = 4 Ohms

Plugging in the values:

Power (P) = (12)^2 / 4
Power (P) = 144 / 4
Power (P) = 36 watts

Therefore, the power rating of the transistor radio is 36 watts.