29/03/2020 D.C Circuits(Senior Class Physics Study by Topics) 29/03/2020 0Comments by Gate Academy Welcome to your D.C Circuits(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. A source delivers 12 V and the current is 777 mA. Then the best expression for the resistance is 9.3 Ω 15.4 Ω 15 Ω 9.32 Ω 2. What type of circuit combines one or more series circuits with one or more parallel circuits? Parallel Simple Series Series-parallel 3. The current through the potentiometer is 17 mA and its value is 1.22KΩ. The power is 20.7 W 350 mW 20.7 mW 0.24 μW 4. In the diagram above, resistors R_{1} and R_{2} are shown in two different connections to the same battery with an emf (voltage) ε. Assume no internal resistance. How does the power dissipated by the resistors in these two cases compare? It is greater for the series connection It is different for each connection, but one must know the values of R1 and R2 to know which is greater It is the same for both connections It is greater for the parallel connection 5. Potential difference between ends of conductor maintained by the battery is zero different one constant 6. What is not required for troubleshooting a circuit? Test equipment Test points Voltages and signals Schematic diagram 7. Convert 10000 to metric prefix 10 Mega 100 Mega 100 Kilo 10 Kilo 8. Electrical shock occurs when an individual touches Electrical Equipment Power Supplies Ground and Circuit Electrical Components 9. Complex circuits can be simplified using one of ___________ laws Kirchoff's Faraday's Newton's Franklin's 10. Which of these statements is true? Ammeters have a very large internal resistance. Ammeters are connected in parallel in a circuit. Voltmeters are connected in series in a circuit Voltmeters have a very large internal resistance. 11. Current normally flows through a diode in Neither direction One direction Both directions Unpredictable ways 12. The basic measurement of resistance is Volt Ohm Watt Amp 13. One joule of work is required to move one coulomb of charge from one point to another with no change in the velocity of the charged particles. Which of the following is true between the two points? The electric field strength is one volt/meter The potential difference is one volt. he resistance is one ohm. The current is one ampere. 14. Ten Coulombs of charge start from the negative terminal of a battery, flow through the battery and then leave the positive terminal through a wire, flow through a resistor and then return to the starting point on this closed circuit. In this complete process, the ten coulombs have a net loss of electrical potential energy receive heat energy from the resistor do positive work on the battery have no net change in electrical potential energy 15. You have an unlimited supply of 1-W, 1000-Ω resistors, and you need a 500-Ω resistance rated at 7 W or more. This can be done by assembling Four sets of two 1000-Ω resistors in parallel, and connecting these four sets in series A 3 X 3 series-parallel matrix of 1000-Ω resistors Four sets of two 1000-Ω resistors in series, and connecting these four sets in parallel Something other than any of the above 16. Subtract (4M) - (2M) 6M 8M 2M 4M 17. A high‑voltage transmission line carries 1000 A at 700,000 V. What is the maximum power carried in the line? 700 kW 700 GW 1.43 kw 700 MW 18. The figure below shows five incomplete circuits composed of resistors, R, all of equal resistance, and capacitors, C, all of equal capacitance. A battery that can be used to complete any of the circuits is available.Which circuit will retain stored energy if the battery is connected to it and then disconnected? E B A D C 19. In a 30 minute interval, one kilowatt-hour of electrical energy is dissipated in a resistance of 20 ohms by a current of 10 A 18 A 14.1 A 20 A 20. EMF means none of these electronic motive force electrical motive force electromotive force 21. What keeps an electron in orbit around the nucleus? Less protons than electrons More electrons than protons Electrostatic force and electrons spinning Electrostatice force and protons spinning 22. Electrical shock occurs when and individual touches Power Supplies Electrical Equipment Ground and Circuit Electrical components 23. What would cause a component to drop the applied voltage? A decrease in value A Short An increase in Value An open 24. Given a dc voltage source delivering 24 V and a circuit resistance of 3.3 KΩ, what is the current? 0.73 A 138 A 138 mA 7.3 mA 25. Effect that is not produced by current is magnetic effect contraction effect chemical effect heating effect 1 out of 25 Time is Up! Time's up