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- A constant current transfers 10*10^14 electrons onto one plate of a capacitor in 3 minutes [min]. (a) What is the current, in units of amperes [A]? Express the answer using an appropriate SI prefix such that there are only 1, 2, or 3 digits shown to the left of the decimal. (b) If the capacitor has a capacitance of microfarads [F], what is the voltage in units of volts [V] across the capacitor?5 part A: If u(C) = 0.2C. What in the uncertainty of a 500 mF capacitor in mF? 5 Part B: If C = 500 mF and R = 8000 W , and V = 5 V. What is the voltage across the resistor in an RC circuit if it started out fully charged and the time since we started charging 6 seconds ago?a) If the current in this circuit is 3 A, what must be the value of R3? b) What is the voltage drop across the 2 ohm resistor? c) What is the voltage drop across the 3 ohm resistor. d) What is the power used in the circuit in amps?
- (a) What is the resistance often 275-O resistors connected in series? (b) In parallel?A 1,00-?O voltmeter is placed in parallel with a 75.0kresistor in a circuit, (a) Draw a circuit diagram of the connection, (b) What is the resistance of the combination? If the voltage across the combination is kept the same as it was across the 75.0-kresistor alone, what is the percent increase in current? (d) If the current through the combination is kept the same as it was through the 75.0-kresistor alone, what is the percentage decrease in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.Three 300- resistors areconnect in series with anAAA battery with a rating of 3 AmpHours. (a) How long can the battery supply the resistors with power? (b) If the resistors are connected in parallel, how long can the battery last?
- Four resistors and a power supply are placed in a circuit as shown below. (a)What is the equivalent resistance (Req) ofthis circuit? (b)What is the total current ofthis circuit? (c)How much energy is consumed by this circuit in 12hours?All of the electrical outlets in a room are connected in a single parallel circuit. The circuit is equipped with a 20-A fuse, and the voltage is V = 120 V. (a) What is the maximum total power that can be supplied by the outlets without blowing the fuse? W(b) How many 1,300-W appliances can be plugged into the sockets without blowing the fuse? appliance(s)A heating element in a stove is designed to dissipate 2,090 W when connected to 240 V. (a) Assuming the resistance is constant, calculate the current in the heating element if it is connected to 120 V. ?A(b) Calculate the power it dissipates at that voltage. ?W
- A 30.0 m long extension cord is made from two #19 gauge copper wires. (a) What is the resistance of the wire at 200C? The diameter of the copper wire is 0.912 mm.(b) If the copper wire is replaced by an Aluminium wire of the same length, what is the diameter so that the new wire has a resistance no greater than the old?How many 75-W lightbulbs, connected to 120 V as in the figure, can be used without blowing a 12 A fuse?(Figure 1) Express your answer as an integer. N=A 17.7-ohm electric blanket, a 25.9-ohm TV, and a 36.8-ohm light bulb are connected in parallel. A difference in potential of 118 volts is applied to the combination.a. What is the equivalent resistance of the circuit? Include units in your answer. b. What is the total current in the circuit? Include units in your answer. c. What is the current through the electric blanket? Include units in your answer