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.
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.