Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 31, Problem 5PLA
To determine
Whether the resistance must be place in series or in parallel with the galvanometer to construct a voltmeter of a given full-scale deflection from it.
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- The ignition circuit of an automobile is powered by a 12-V battery. How are we able generate large voltages with this power source?arrow_forwardWhat determines the severity of a shock? Can you say that a certain voltage is hazardous without further information?arrow_forwardWhen a voltmeter is connected across the terminals of a resistor, what usually happens to the potential difference across the resistor? What does the answer to this question suggests concerning a desirable design for voltmeters?arrow_forward
- What is the purpose of the resistor connected in series with the galvanometer in a Wheatstone bridge? What would happen if it were initially set to 0 ohms rather than to 500 ohms?arrow_forwardIf a current of one- or two-tenths of an ampere were to flow into one of your hands and out the other, you would probably be electrocuted. But if the same current were to flow into your hand and out the elbow above the same hand, you would survive even though the current might be large enough to burn your flesh. Explain.arrow_forwardwhich one of the followings are true in a electric circut 1-ampermeter has a huge inner resistence so its connected to a circut serial2-voltmeter has low inner resistence so it is connected to circut paralel3-battery is an emf sourcearrow_forward
- What could happen to the drift velocity of the electrons in awire and to the current in the wire if the electrons could movethrough it freely without resistance?arrow_forwardIf electrical power is transmitted over long distances, the resistance of the wires becomes significant. Why? Which mode of transmission would result in less energy loss, high current and low voltage or low current and high voltage? Discuss.arrow_forwardSmall household electrical devices, such as vacuum cleaners, televisions, and floor lamps, each draw a different amount of current, but all require 120 volts to operate. Are the outlets in a power-strip, then, wired in series or parallel? Why?arrow_forward
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