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- Consider the circuit shown in Figure P28.21 on page 860. (a) Find the voltage across the 3.00-0 resistor, (b) Find the current in the 3.00-12 resistor.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.A circuit contains a D-cell battery, a switch, a 20- resistor, and three 20-mF capacitors. The capacitors are connected in parallel, and the parallel connection of capacitors are connected in series with the switch, the resistor and the battery, (a) What is die equivalent capacitance of the circuit? (b) What is the KC time constant? (c) How long before the current decreases to 50% of the initial value once the switch is closed?
- 01701&cmid=97298page38 For the following circuit in the figure below. Determine V,-V, (in units of V) for E = 48.5 V. a t of estion 20 20 50 9. Select one: OA. 8.08 OB. -40.42 OC. -9.70 OD. -8.08 OE 9.70 ous page brt sc delete backsoace entconnected con sist of five resis tors 7.a A circit as below. Determine the effective Tesistance in the circuit. RI RS- R2 R+ Ginen R, = sor, Rz=25Jr, R3= 30r, R¢=60r, Rs= 70r iD Wlhat is Hhe current is Hhe circuit iç the potential the resistors is 24 V? CICcross What is the potential that ccin be tapped across Rs? b.A circuit consist sisc capacitors connicted as below, detemine the effective capacitalnce. (3 G= SmF, G= Smf, G= 6mF, C4 = 6mF, Gaigg fo Cs= 8mF, C6 = 8 mF. What is the energy stored in the capacitors in ;circuit if the potential across %3D the the capacitors is 24V? C- lwo charges +3C and t 5C are placed 20Cm from in Yacuum- Wlhat magnitude of force will. their Centres they ebcert on each other, If Hhe sccond charge hes its polacity changed to negative (-sc). Inlliat would be the nature of the force ? Will there be a change in magnitude ? LPermitivity of free space a 8.8sx 10 -124 resistors are connected as shown in the figure. The total current passing through the circuit is 5A while the current, R ahs a resistance of 3 ohms, the voltage across R2 and R4 are 20V and 30V respectively and the current passing through R3 is 2A. determine the Total Voltage and Total Resistance of the circuit shown and all other unknowns. RI ww R3 R2
- The capacitor in the circuit shown was charged to 9 µC. After one second of closing the switch S, the charge on 5uF the capacitor will be: in µC) 100KQ Select one: O a. zero O b. 1.08 O c. 1.22 O d. 1.62 O e. 1.35340 ww 3Q 50 What is the electric potential difference of the circuit if the current is 0.1? Answer:I CheckIn the circuit shown C= 6µF and R= 11 2. Determine the current (in Amps) through the battery a long time after closing the switch. 502 R 50Q 200 V a. prt sc ww wwHH
- 96662&cmid%-D97298page%-D3 What is the equivalent resistance between points a and b when R = 25.7 Q? R R. R b. Rwwww R2 R1 ww R3 V A 5-year old has nothing better to do than to connect three resistors to a voltage source as shown. The resistors are R1=40 2, R2=69 2, and R3=15 2, respectively, and the voltage source has 2.5 Volts. What is the total resistance? Submit Answer Tries 0/2 What is the current through the voltage source?An 80-2 resistor and a 20-2 resistor are connected in parallel, and then this combination is connected in series with a 32- resistor and a 24-V battery. An ammeter to measure the current through the 80- 2, and a voltmeter to measure the potential difference across the 32 Q is needed. ADraw the cireni s 2 k he total resistance of the cirea? thiat current fle through the 32-Qesis 4. What is the difference of potential across the 32-N resistor? Across the 80-N resistor? 5. What is a fuse and how does it protect a circuit or deviče to which it is connected? 6. Show using diagrams how using only 2 Q resistors the following resistances can be made: (a) 0.5 2; (b) 1 2; (c) 3 N; (d) 5 N. 7. Three wires in a circuit meet in a common point. The currents flowing in two of them are 2 A and 3 A respectively. What are the possible values of the current in the third wire? Explain your answer [drawings would help]. D koksch_b201pdt Show AN MacBook Air esc 288 10 F11 F12 %23 & 2 4. 6. 8 9 11 delete Q W…