A 20 V battery, a 8 Ω resistor and a 16 Ω resistor are connected in parallel. The battery has an internal resistance of 6 Ω. i) Draw the circuit diagram. ii) Calculate the current flowing through the battery. iii) Calculate the voltages across the three resistances.
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A 20 V battery, a 8 Ω resistor and a 16 Ω resistor are connected in parallel. The battery has an internal resistance of 6 Ω.
i) Draw the circuit diagram.
ii) Calculate the current flowing through the battery.
iii) Calculate the voltages across the three resistances.
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- 1. Identical lightbulbs are connected to identical batteries in three circuits. A (a) The voltage of the battery in circuit 2 is 12 V. What is the voltage of bulbs B and C? Explain. (2) (3) (b) The current through the battery of circuit 3 is 3 A. What is the current through bulb D and bulb E? Explain. BConsider the following circuit diagram, assuming the voltage is V = and all the capacitors have C = 2µF. 10v, C, C3 C5 a) By finding the equivalent capacitance, and then working backwards, find the voltage drop across each capacitor, and the charge stored on each ca- pacitor. b) What is the energy stored in each capacitor? c) Now replace each capacitor with R= 20 resistors. By finding the equiv- alent resistance and working backwards, find the voltage drop across each resistor and the current through each resistor. d) What is the power dissipated by each resistor? What is the power deliv- ered by the voltage source?A circuit containing six resistors is connected to a battery with emf equal to 35 V and zero internal resistance as shown in Figure. a) What is the current in the circuit (current passing through the battery)? b) What is the voltage across 302 resistor? c) What is the current through 10 2 resistor? 553 25.23 10.12 www. 30 www IS 35V 20-22
- 26. Four resistors are connected to a battery as shown in the figure below, with ɛ = 15.0 V, R1 = 10.0 Ω, R2 - 20.0 Ω , R3- 40.0 Ω , and R4-30.0 Ω. %3D R2 R1 R4 AL R3 a) What is the equivalent resistance of the circuit? b) What is the potential (in volts) across each of the four resistors? c) What is the current across each of the four resistors?Three resistors are connected in series as shown in the Figure below to a 20 V battery. Resistors, R1 = 5.5 Ω, R2 = 8.0 Ω and the value of R3 is unknown. If the total resistance of the circuit is 16.0 Ω, a) what is the value of resistor, R3? b) What is the current through each resistor? c) What is the voltage drop across each resistor? Enter each value separated by a commaWhich statements are true? a) At any junction point in a circuit, the sum of all the currents entering the junction must equal the sum of all the currents leaving the junction. b) The sum of the changes in potential around any closed loop of a circuit must equal zero. c) Kirchoff's junction rule is based on the conservation of energy. d) Kirchoff's loop rule is based on the conservation of charge.
- 4. Which of the following statements is true of the voltameters? A. Voltmeter 1 and voltmeter 2 will read the same voltage. B. Voltmeter 1 will read 6 V. C. Voltmeter 2 will read 6 V. D. Voltmeter 2 will read the correct voltage across the 3Ω resistor. E. Both voltmeters will read the correct voltage across the 6Ω resistor.The circuit on the right has three resistors and a 12 V battery. 6Ω 12 V 100 a) What is the total resistance in the circuit? b) How much current is flowing through the R2 resistor? c) How much power is the total circuit using?A. Five resistors are connected as shown below. Which of the following statements is true? Select all apply. BE and C are in parallel A and E are in parallel A and C are in parallel B and D are in parallel A and D are in series B and E are in series AD and C are in parallel B. Five resistors of the same resistance R are connected as shown below. What is the equivalent resistance? 0.33R 0.5R 2R R 2.5R 0.2R 5R 1.5R