Specify the points to which you could connect a voltmeter to measure the following potential differences in
[link] : (a) the potential difference of the voltage source; (b) the potential difference across
; (c) across
; (d) across
; (e) across
and
. Note that there may be more than one answer to each part.
To measure currents in
[link] , you would replace a wire between two points with an ammeter. Specify the points between which you would place an ammeter to measure the following: (a) the total current; (b) the current flowing through
; (c) through
; (d) through
. Note that there may be more than one answer to each part.
What is the sensitivity of the galvanometer (that is, what current gives a full-scale deflection) inside a voltmeter that has a
resistance on its 30.0-V scale?
What is the sensitivity of the galvanometer (that is, what current gives a full-scale deflection) inside a voltmeter that has a
resistance on its 100-V scale?
Find the resistance that must be placed in series with a
galvanometer having a
sensitivity (the same as the one discussed in the text) to allow it to be used as a voltmeter with a 0.100-V full-scale reading.
Find the resistance that must be placed in series with a
galvanometer having a
sensitivity (the same as the one discussed in the text) to allow it to be used as a voltmeter with a 3000-V full-scale reading. Include a circuit diagram with your solution.
Find the resistance that must be placed in parallel with a
galvanometer having a
sensitivity (the same as the one discussed in the text) to allow it to be used as an ammeter with a 10.0-A full-scale reading. Include a circuit diagram with your solution.
Find the resistance that must be placed in parallel with a
galvanometer having a
sensitivity (the same as the one discussed in the text) to allow it to be used as an ammeter with a 300-mA full-scale reading.
Find the resistance that must be placed in series with a
galvanometer having a
sensitivity to allow it to be used as a voltmeter with: (a) a 300-V full-scale reading, and (b) a 0.300-V full-scale reading.
Find the resistance that must be placed in parallel with a
galvanometer having a
sensitivity to allow it to be used as an ammeter with: (a) a 20.0-A full-scale reading, and (b) a 100-mA full-scale reading.
Suppose you measure the terminal voltage of a 1.585-V alkaline cell having an internal resistance of
by placing a
voltmeter across its terminals. (See
[link] .) (a) What current flows? (b) Find the terminal voltage. (c) To see how close the measured terminal voltage is to the emf, calculate their ratio.
(a) 1.58 mA
(b) 1.5848 V (need four digits to see the difference)
(c) 0.99990 (need five digits to see the difference from unity)
Suppose you measure the terminal voltage of a 3.200-V lithium cell having an internal resistance of
by placing a
voltmeter across its terminals. (a) What current flows? (b) Find the terminal voltage. (c) To see how close the measured terminal voltage is to the emf, calculate their ratio.
A
voltmeter is placed in parallel with a
resistor in a circuit. (a) Draw a circuit diagram of the connection. (b) What is the resistance of the combination? (c) If the voltage across the combination is kept the same as it was across the
resistor alone, what is the percent increase in current? (d) If the current through the combination is kept the same as it was through the
resistor alone, what is the percentage decrease in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.
A
ammeter is placed in series with a
resistor in a circuit. (a) Draw a circuit diagram of the connection. (b) Calculate the resistance of the combination. (c) If the voltage is kept the same across the combination as it was through the
resistor alone, what is the percent decrease in current? (d) If the current is kept the same through the combination as it was through the
resistor alone, what is the percent increase in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.
Suppose you have a
galvanometer with a
sensitivity. (a) What resistance would you put in series with it to allow it to be used as a voltmeter that has a full-scale deflection for 0.500 mV? (b) What is unreasonable about this result? (c) Which assumptions are responsible?
(a) What resistance would you put in parallel with a
galvanometer having a
sensitivity to allow it to be used as an ammeter that has a full-scale deflection for
? (b) What is unreasonable about this result? (c) Which assumptions are responsible?
(a)
(b) You can’t have negative resistance.
(c) It is unreasonable that
is greater than
(see
[link] ). You cannot achieve a full-scale deflection using a current less than the sensitivity of the galvanometer.
A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?