Question

The lengths of two metal wires P and Q are in the ratio 1:2 and the...

The lengths of two metal wires P and Q are in the ratio 1:2 and the ratio of the resistivities of P and Q is 3:2. Assume that each wire has circular cross-section. The ratio of the diameter of the cross-sections of P and Q is 2:1. The ratio of the resistances of P and Q is:

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Part A Determine the ratio of the resistances of two wires that are identical except that...
Part A Determine the ratio of the resistances of two wires that are identical except that wire A is twice as long as wire B. RARB = Part B Determine the ratio of the resistances of two wires that are identical except that wire A has twice the radius of wire B. RARB = Part C Determine the ratio of the resistances of two wires that are identical except that wire A is made of copper and wire B is...
Two copper wires have the same volume, but wire 2 is 2 times longer than wire...
Two copper wires have the same volume, but wire 2 is 2 times longer than wire 1. The ratio of the resistances of the two wires R2/R1 is
1. The current in a 100 watt lightbulb is 0.760 A . The filament inside the...
1. The current in a 100 watt lightbulb is 0.760 A . The filament inside the bulb is 0.170 mm in diameter. a. What is the current density in the filament? Express your answer to three significant figures and include the appropriate units. b. What is the electron current in the filament? Express your answer using three significant figures. _____________ 2. Wires 1 and 2 are made of the same metal. Wire 2 has twice the length and twice the...
the cross section of five long parallel wires, separated by a distance d = 10 cm...
the cross section of five long parallel wires, separated by a distance d = 10 cm and have lengths of 21.0 m. Each wire carries a current of 5.6 A. Currents 1, 3, and 5 are out of the page, while currents 2 and 4 are into the page. Each wire experiences a magnetic force due to the other wires. What is the magnitude and direction of the net magnetic force on wire 1?
s the cross section of five long parallel wires, separated by a distance d = 10...
s the cross section of five long parallel wires, separated by a distance d = 10 cm and have lengths of 21.0 m. Each wire carries a current of 5.6 A. Currents 1, 3, and 5 are out of the page, while currents 2 and 4 are into the page. Each wire experiences a magnetic force due to the other wires. What is the magnitude and direction of the net magnetic force on wire 1?
Two conductors are made of the same material and have the same length. The conductor A...
Two conductors are made of the same material and have the same length. The conductor A is a solid wire 1 mm in diameter; conductor B is a hollow tube with an outside diameter of 2 mm and an internal diameter of 1 mm. What is the ratio between the resistances of the two wires, RA / RB? At resistances are measured between the ends of the wires.
) Two wires with circular cross section area are carrying the same amount of electric current,...
) Two wires with circular cross section area are carrying the same amount of electric current, which one has a larger current density? A) The one with larger radius B) The wire which has a longer length C) The one which has a shorter length D) The one with smaller radius E) The one with larger cross section area
In the figure, four long straight wires are perpendicular to the page, and their cross sections...
In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 18 cm. The currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3, and each wire carries 28 A. What is the magnitude of the net magnetic field at the square's center?
28. Wires of the same length are made from metals A and B. Metal A ha...
28. Wires of the same length are made from metals A and B. Metal A ha a coefficient of linear expansion equal to twice that of metal B. Both wires are heated independently, but uniformly from an initial temperature of 40 degrees celcius and the heating is stopped when their final lengths are again equal. If wire A is removed from the heat source when its final temperature is 50 degrees celcius, what is the final temperature of wire B?...
Three resistors are made out of three different materials and have different (but uniform) cross sections....
Three resistors are made out of three different materials and have different (but uniform) cross sections. Resistor 1 has a circular cross section of radius 2.47 mm . Resistor 2 has a square cross section with a side length of 3.07 mm . The third resistor's cross section is a right triangle with two sides of length 6.47 mm . All of the resistors are 0.763 cm in length. Use the provided table of resistivities to calculate the resistance of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT