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a portable television using a 12-v 3-ah rechargeable battery can operate for a period of about 55 h what is the average
between two points in an electric circuit a voltmeter reads 125 v for a period of 20 s if the current measured by an
a using table 32 find the resistance of 450 ft of 11 and 14 awg wiresb compare the resistances of the two wiresc
a what is the area in circular mils of a copper wire that has a resistance of 25 omegaand is 300 ft long t 20degcb
determine the increase in resistance of a copper conductor if the area is reduced by a factor of 4 and the length is
visit your local library and find a table listing the critical temperatures for a variety of materials list at least
the conductance of a wire is 100 s if the area of the wire is increased by 23 and the length is reduced by the same
a calculator with an internal 3-v battery draws 04 mw when fully functionala what is the current demand from the
a plot power versus current for a 100-omega resistor use a power scale from 0 to 1 w and a current scale from 0 to 100
a small portable black-and-white television draws 0455a at 9va what is the power rating of the televisionb what is the
the motor of a power saw is rated 685 efficient if 18 hp are required to cut a particular piece of lumber what is the
a portion of a residential service to a home is depicted in fig 678a determine the current through each parallel branch
for the network of fig 674a find the total conductance and resistanceb determine is and the current through each
using the information provided in fig 688 determine the current through each branch using simply the ratio of parallel
a the voltage va for the network of fig 6102 is -1 v if it suddenly jumped to 20 v what could have happened to the
a design a series ohmmeter using a 100-microa 1000-omega movement a zero-adjust with a maximum value of 2 komega a
using a 1-ma 100-omega d arsonval movement design a multirange voltmeter having scales of 5 v 50 v and 500 v show the
given the voltmeter reading v 27 v in fig 787a is the network operating properlyb if not what could be the cause of
for the network of fig 8103a convert the voltage source to a current sourceb reduce the network to a single current
for the network of fig 899a find the current through the 2-omega resistorb convert the current source and 4-omega
a write the nodal equations for the networks of fig 8110b using determinants solve for the nodal voltagesc determine
write the mesh equations for each of the networks of fig 8110 and using determinants solve for the loop currents in
for the network of fig 8107a write the equations necessary to solve for the branch currentsb by substitution of
the current through a 05-microf capacitor is given what is the sinusoidal expression for the
a circuit dissipates 100 w average power at 150 v effective input voltage and 2 a effective input current what is the