Electric Circuits

Which of the following best describes electric power?

A circuit has a current of 3 A and a voltage of 12 V. What is the electric power?

A device has a current of 4 A flowing through it and a resistance of 5 $\Omega$. What is the power dissipated by the device?

A light bulb is labeled '60 W'. What does this indicate about the bulb?

A heating element in a kettle has a resistance of 20 $\Omega$ and is connected to a 120 V power supply. What is the power consumed by the heating element?

A 10 $\Omega$ resistor is connected to a voltage source. If the current through the resistor is doubled, how does the power dissipated by the resistor change?

A light bulb with a power rating of 75 W is connected to a 120 V source. What is the resistance of the bulb?

Two resistors, one with a resistance of 4 $\Omega$ and the other with a resistance of 6 $\Omega$, are connected in series to a 12 V battery. What is the power dissipated by the 4 $\Omega$ resistor?

Two light bulbs have power ratings of 60 W and 100 W, respectively. Both are connected to a 120 V source. Which bulb will be brighter?

A 40 W light bulb and a 75 W light bulb are connected in series in a circuit. Which bulb will be brighter?