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A wire of initial length Ly and radius to has a measured resistance of 2 Ohms....
Question 1 3 pts A wire of initial length Lo and radius ro has a measured...
Question 1 3 pts A wire of initial length Lo and radius ro has a measured resistance of 2 Ohms. The wire is drawn under tensile stress to a new uniform radius of r-0.270 What is the new resistance of the wire? Hint: Assume the radius and the length of the wire can change. 1.250 Ohms 1,875 Ohms 69444 Ohms 3,375 Ohms None of the above Next →
A wire of initial length L0 and radius r0 has a measured resistance of 2 Ohms....
A wire of initial length L0 and radius r0 has a measured resistance of 2 Ohms. The wire is drawn under tensile stress to a new uniform radius of r = 0.2r0. What is the new resistance of the wire? Assume the radius and the length of the wire can change (Assume the radius and the length of the wire can change) 3375 Ohms 69444Ohms 1875Ohms 1250Ohms
A wire of radius r1 and length l1 has a resistance R1 = 27.0 ohms. Find...
A wire of radius r1 and length l1 has a resistance R1 = 27.0 ohms. Find the resistance of another wire made of the same material, with a radius r2 = 4*r1, and length l2 = l1/3.
A wire of length L and radius r has a resistance R. If the length and...
A wire of length L and radius r has a resistance R. If the length and radius of this wire are doubled, the new resistance: remains the same. doubles. quadrables. drops to 1/2 its original value. drops to 1/4 its original value.
A length of metal wire has a radius of 0.002 m and a resistance of 0.1...
A length of metal wire has a radius of 0.002 m and a resistance of 0.1 ohms. When the potential difference across the wire is 13 V , the electron drift speed is found to be 0.000208 m/s. Based on these data, calculate the density of free electron in the wire. The fundamental charge is 1.6 x 10^-19 C i cant figure this out
13. A wire of length L and resistance R is now drawn out by pulling such...
13. A wire of length L and resistance R is now drawn out by pulling such that its new length is 1.5L. What is its new resistance? (Assume the density remains constant.) A) 1.00 R B) 1.50 R C) 2.25 R D) 5.06 R E) 4.44 x 101 R Ans: C
What is the resistance of a 6.4 m length of nichrome wire that has a radius...
What is the resistance of a 6.4 m length of nichrome wire that has a radius of 0.321 mm? How much current does it carry when connected to a 120 V source? R = _______ Ω I = __________ A
A wire of length L and cross-sectional area A has resistance R. What will be the...
A wire of length L and cross-sectional area A has resistance R. What will be the resistance Rstretched of the wire if it is stretched to twice its original length? Assume that the density and resistivity of the material do not change when the wire is stretched.
Figure < 1 of 1 Consider, for instance, a bar of initial length L and cross-sectional...
Figure < 1 of 1 Consider, for instance, a bar of initial length L and cross-sectional area A stressed by a force of magnitude F. As a result, the bar stretches by AL (Figure 1) Let us define two new terms: • Tensile stress is the ratio of the stretching force to the cross-sectional area: stress = 5 • Tensile strain is the ratio of the elongation of the rod to the initial length of the bar strain= 41 It...
Problem #2. A plastic core of length L and radius "a" has a long copper wire w nes. After N turns...
Problem #2. A plastic core of length L and radius "a" has a long copper wire w nes. After N turns of wire, the outer radius of the coil is -4a". Te on top of itself, making the radius gradually bigger.) Assume the crwire. (20 pts) together tightly and uniformly. A current 1- is then run through the wire keeps wrapping r wires are packed A) Show a calculation of the magnitude of the magnetic field on the as' Law)...
Question 1 3 pts A wire of initial length Lo and radius ro has a measured resistance of 2 Ohms. The wire is drawn under tensile stress to a new uniform radius of r-0.270 What is the new resistance of the wire? Hint: Assume the radius and the length of the wire can change. 1.250 Ohms 1,875 Ohms 69444 Ohms 3,375 Ohms None of the above Next →
A wire of length L and radius r has a resistance R. If the length and radius of this wire are doubled, the new resistance: remains the same. doubles. quadrables. drops to 1/2 its original value. drops to 1/4 its original value.
13. A wire of length L and resistance R is now drawn out by pulling such that its new length is 1.5L. What is its new resistance? (Assume the density remains constant.) A) 1.00 R B) 1.50 R C) 2.25 R D) 5.06 R E) 4.44 x 101 R Ans: C
Figure < 1 of 1 Consider, for instance, a bar of initial length L and cross-sectional area A stressed by a force of magnitude F. As a result, the bar stretches by AL (Figure 1) Let us define two new terms: • Tensile stress is the ratio of the stretching force to the cross-sectional area: stress = 5 • Tensile strain is the ratio of the elongation of the rod to the initial length of the bar strain= 41 It...
Problem #2. A plastic core of length L and radius "a" has a long copper wire w nes. After N turns of wire, the outer radius of the coil is -4a". Te on top of itself, making the radius gradually bigger.) Assume the crwire. (20 pts) together tightly and uniformly. A current 1- is then run through the wire keeps wrapping r wires are packed A) Show a calculation of the magnitude of the magnetic field on the as' Law)...
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