A lamp is plugged into a 110 Volt electrical outlet. There is a 9 Watt LED bulb in the lamp. What is the current in the bulb? What is the resistance of the bulb?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”