A small bulb is rated at 75w when operated at 125v the

Reference no: EM13618555

1) a conductor of rad r, length e and resistivity p has resistance R. what is the new resistance if it is stretched to 4 times its original length?

a) 1/16R b) 1/4R c) R d) 4R e) 16R

2) a small bulb is rated at 7.5W when operated at 125V. it has resistance in OHMS of?

a) .45 b)7.5 c) 17 d) 940 e) 2100

3) a small bulb is rated at 7.5W when operated at 125V. the tungsten filament has a temp coeff of resistivity a=4.5x10^-3/C. when the filament is hot and glowing its temp is seven times the room temp 20C. what is the resistance of the filament in OHMS at room temp.

Reference no: EM13618555

Questions Cloud

A rigid 12m3 tank contains water at pressure of 1985 with : a rigid 1.2m3 tank contains water at pressure of 198.5 with 10 percent liquid and 90 percent vapor by volume. a

Joe has another get-rich-quick idea but he needs funding to : joe has another get-rich-quick idea but he needs funding to support it. he chooses an all-debt funding scenario. he

Of the first 10000 votes cast in an election 5180 were for : of the first 10000 votes cast in an election 5180 were for candidate a. find a 95 confidence interval for the fraction

Miller inc is selling 600000 bonds to raise money for new : miller inc is selling 600000 bonds to raise money for new magazines to be published in the coming year. the bonds will

A small bulb is rated at 75w when operated at 125v the : 1 a conductor of rad r length e and resistivity p has resistance r. what is the new resistance if it is stretched to 4

Suppose that it is known that the number of items produced : suppose that it is known that the number of items produced at a factory per week is a random variable x with mean 50. a

The stone is released from rest as it falls down the wire : a frictionless pulley has the shape of a uniform solid disk of mass 6.00kg and radius 19.0cm . a 3.40kg stone is

Authors of paper describe a data packet switch that uses : authors of paper describe a data packet switch that uses the statistical behavior of packet arrivals to reduce

What is the angular momentum of the earth spinning on its : the earth rotates on its axis once every 24 hours and circles the sun once every 364.25 days. using si units m kg s

User Account

All Pages