A square shaped ( 4.7 mm by 4.7 mm) metal rod has resistance of 1.41 ohm. The resistivity of material is 0.5* 1.41 *10^-6 ohm-m. What is the length of the rod in meter?
A square shaped ( 4.7 mm by 4.7 mm) metal rod has resistance of 1.41 ohm....
Find the resistance of a 12 meter length of metal wire of 0.5 mm diameter. The resistivity of metal is 2.8×10-6 Ω·cm at a temperature of 20°C. Express the answer with two decimal places.
.A cylindrical metal rod has a resistance R. A second rod that is made of the same material has (1 potnt) triple the length and triple the diameter of the first rod. What is the resistance of the second rod? OR O3R O9R 4. Which material has the highest resistivity? (l point) O glass O steel Olead Onichrome alloy
An aluminum rod has a resistance of 3.12 Ohm at 20.0 degree C. Calculate the resistance of the rod at 120 degree C by accounting for the changes in both the resistivity and the dimensions of the rod. The coefficient of linear expansion for aluminum is 2.40 times 10^-5 (degree C)^-1. Ohm
A rod of 2m length and a square (2.0mn times 2.0 mm) cross section is made of material with a resistivity of 6 times 10^-4 rm. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated on the rod?
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistance R of 8.0 Ω as shown in the figure. The wire and the rod are placed in the plane of the paper. A constant magnetic field of strength 0.40 T is applied perpendicular into the paper. An applied force moves the rod to the right with a constant speed of 6.0 m/s. What is the magnitude and direction of the...
A conducting wire has a 1.97 mm diameter, a 1.0 m length, and a 60 mohm resistance. What is the resistivity of the material? Please explain how the answer is 1.8288*10^-7 ohm m
A square metal frame of resistance 10 ohm is pushed with a force of 20 N into a homogenous magnetic field of 2 T with a constant speed of 20 m/s. What is size of this frame if the current generated in it is 5 mA? An optical system is made of converging and diverging lenses with focal distances 12.5 mm and 54 mm respectively. How large is the final mage of a 7 mm object placed at a distance...
At –25°C a 25 m metal wire with a diameter of 1.0 mm has a resistance of 0.55 W. If the temperature coefficient of resistivity of the metal is 0.0018/C°, what is its resistivity at 32°C?
Consider the rectangular prism shaped wire shown in the figure below where the cross sectional part is a square with sides d=10.1 mm. The current runs along the length of the wire where ℓ =7.3 m and the wire has cylindrical hole along its length with a cross sectional area of A=21 mm2. If the wire is made out of a material whose resistivity is 126 × 10-6Ω.m , determine the resistance of the wire. Please express your answer in...
What length of copper wire .6 mm in diameter has a resistance of 1 Ohm?