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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 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.
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)...
A circuit system contains a circular wire with a radius of r=13.5*10^-2m. The circuit has a...
A circuit system contains a circular wire with a radius of
r=13.5*10^-2m. The circuit has a resister with resistance equaling
r1= 9.9 ohms. The circuit is entirely immersed in a uniform
magnetic field with a magnitude that changes over the time. If the
rate of change of the magnetic field is either decreasing - or
increasing + with .->B into page
a) find current induced in circuit. Write answer in mA and to 2
decimal places
b) indicate direction of...
A circular thin wire loop of radius a=37.2 cm and total resistance R=0.186 12 is positioned...
A circular thin wire loop of radius a=37.2 cm and total resistance R=0.186 12 is positioned in the (xy)-plane, where it is exposed to the external (applied) uniform magnetic field directed along the z-axis. Over some period of time t, the z-component of that field varies as Bextz(t)=Bo – at + ßta, where Bo=6.68 T, a=60.727 T/s and ß=69.008 T/s2. Right at the geometrical center of the loop circle, there is a very accurate magnetometer that can detect the difference...
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)...
A circuit system contains a circular wire with a radius of
r=13.5*10^-2m. The circuit has a resister with resistance equaling
r1= 9.9 ohms. The circuit is entirely immersed in a uniform
magnetic field with a magnitude that changes over the time. If the
rate of change of the magnetic field is either decreasing - or
increasing + with .->B into page
a) find current induced in circuit. Write answer in mA and to 2
decimal places
b) indicate direction of...
A circular thin wire loop of radius a=37.2 cm and total resistance R=0.186 12 is positioned in the (xy)-plane, where it is exposed to the external (applied) uniform magnetic field directed along the z-axis. Over some period of time t, the z-component of that field varies as Bextz(t)=Bo – at + ßta, where Bo=6.68 T, a=60.727 T/s and ß=69.008 T/s2. Right at the geometrical center of the loop circle, there is a very accurate magnetometer that can detect the difference...
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