A voltmeter has a range of 15 volts and its resistance is 1000 ohm. How will you convert it to read 150 volts?
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- The resistance of electric heater is 32 Ohm when connectedto 120 V What is the power consumption of the heater?What voltage must be supplied to a lightbulb with hot resistance 820 Ω if it is in series with a voltage source and needs .35 A to function? (hot resistance is resistance lightbulb has when current is applied) 287 V 224 V 351 V 498.4 VA dry cell with an emf of 1.50V and an internal resistance of 0.050 ohms is "shorted out" with a piece of wire with a resistance of only 0.20 ohms. What will a voltmeter read if it is connected to the terminals of the dry cell at this time?
- Three 1250 Q resistors are wired in series. What is the total resistance of the combination? (Express your answer in Q).The resistance of electric heater is 13 Ohm when connectedto 120 V What is the power consumption of the heater?A toaster is rated at 80.0 W, when connected to a 132.0-V source. What current (in amperes) does the toaster carry? Round your answer to the nearest hundredth of an ampere.
- What is the effective resistance of a car's starter motor when 150 A flows through it as the car battery applies 11.0 V to the motor?A 240V household appliance has an electrical resistance of 187 Ohms. How much energy will it use in 52.8 seconds. Express your answer in kilojoules to at least 3 significant figures.The conductance G of an object is defined as the reciprocal of the resistance R; that is, G = 1/R. The unit of con- ductance is a mho (= ohm'), which is also called the siemens (S). What is the conductance (in siemens) of an object that draws 440 mA of current at 3.0 V?