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- Compare between incandescent lamps (70 watt) and CFL lamp (17 watt). if the price of incandescent is 3 NIS and the price of the florescent is 12 NIS and the price of the KWH is 0.5 NIS assuming that both lamps will work 10000 hours, how many NIS we save when we use CFL lamps. ut of uestion Select one: a. 137.5 NIS Ob. 271 NIS O c. 230 NIS d. none of these e. 150 NIS1.3 Ohmmeter: In order to use the basic meter as an ohmmeter, a variable resistor and a DC voltage source, for example a battery, should be connected in series to the meter. The connection diagram is given in Fig. 3. The resistor to be measured is connected between terminals a and b. Ry max 1 mA Rm A + a Rx Figure 3. . VDC 9In the circuit shown, the battery voltage. V = 15V and the load resistance,R = 352. www R V A Battery The ammeter reading is A. The Voltmeter reading is V.
- a) What is the reading of Ammeter A1. b) What is the reading of Ammeter A2. c) What is the reading of voltmeter V1.A capacitor C = 5 µF, resistor R = 140 Q and a voltmeter are connected to a battery of Emf = 15 V as shown in the figure below. If the voltmeter is disconnected, what is the potential difference across the capacitor? R a C Fint Emf The potential difference, V, = Units Select an answer v. Then the voltmeter is connected to points a and b and used to measure the potential difference across the capacitor. What does the voltmeter read if its internal resistance is rint = 1 kN? The voltmeter readings, V2 = Units Select an answer v How can the accuracy of voltmeter be increased? What internal resistance would provide more accurate measurements? Please write your answer in the box below. pe here to search 3. 5 E KThe voltage across the battery is 15 V, the voltage across the 10 Ω resistor is 3.1 V, and the voltage across the 20 Ω resistor is 5.6 V. What is the voltage across the light bulb, in Volts? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- What are the expected readings of the following in the figure below? (R = 5.80 N, AV = 6.50 V) A R AV 10.0 N + V 5.00 N + R 4.50 V (a) ideal ammeter (Give your answer in mA.) mA (b) ideal voltmeter (Give your answer in volts.) VAn electrical device draws 3.4 A (amps) when a voltmeter shows a voltage drop of 5.6 V (volts) across it. What is the electrical resistance of the device? Give your answer to the nearest tenth (0.1) ohm. Do NOT give units in the answer (since the units are already specified). Your Answer: AnswerIn the circuit shown, the battery voltage, V = 15V and the load resistance, R = 15N. %3D R V A +, + Battery The ammeter reading is A. The Voltmeter reading is V.
- What are the expected readings of the following in the figure below? (R = 5.60 ohms, DeltaV = 5.00 V) A) ideal ammeter (Give your answer in mA) B) ideal voltmeter (Give your answer in volts) C) What if? How would the readings in the ammeter (in mA) and voltmeter (in volts) change if the 4.50 battery was flipped so that it’s positive terminal was to the right? Ideal ammeter: Ideal voltmeter:What is the output voltage in the circuit below if Vin =2.0 V (DC)? Your answer should be in Volts and be an exact number. 7V Vin Vout R1 5 kN -7V R2 1 kNDirections: Solve the problem completely. In an electric circuit, E volts is the electromotive force at t seconds and E = 2 cost. Find the electromotive force from 0 sec. to sec. 7 HINT: use this equation 2 cost dt, to find the electromotive force.