What is the maximum number of 100-W light bulbs you can connect in parallel in a 120-V home circuit without tripping the 20-A circuit breaker

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| C:/Users/tylrg/Downloads/Hw-7-Electric-circuits-II.pdf The diagram below shows a small water heater that uses electrical energy to heat water. The heating element is a small resistor labeled R1oad = 5.0 N immersed in the water. A 20 V ideal emf device supplies current and there is an adjustable resistor Ra in series. The value of the adjustable resistance can be changed to be anywhere between 1.0 - 3.0 N. The adjustable resistor is initially set to 2.0 Q and the switch is closed. (a) What is the voltage drop across the heating element? (b) How much energy is supplied by the source if the water heater runs for 10 minutes? (c) What fraction of this energy is actually used to heat the water? Please express your answer as a percentage, using only two significant figures. (d) Suppose the heating element degrades and corrodes and its resistivity slowly increases as the equip- ment becomes older. • Does the voltage drop across the heating element increase, decrease or remain the same as the…

What is the minimum number of 88@Q resistors that must be connected in parallel to produce an equivalent resistance of 12 0 or less?

A 2.00- and a 7.50-μF capacitor can be connected in series or parallel, as can a 25.0- and a 100-kΩ resistor.Calculate the four RC time constants possible from connecting the resulting capacitance and resistance in series.

The circuit schematic shows a combination of resistors connected to a battery. All resistances are given in Ohms. The voltage of the ideal battery is 32 Volts. (a) If all these resistors were replaced with a single equivalent resistor, what would its resistance be? (b) What is the current supplied by the battery? (c) What is the current through the 125 Ohm resistor? ww ww 225 435 ww 125 Vbatt 325 ww