Electric Current/ Ohm's Law a. Calculate the charges that passes a cross- section in a circuit in 30 seconds when the current is 0.5 A. Calculate the current that would transfer, in 5 s, the same amount of charge as a current on 0.5 A in 60 s. b. The resistivity of copper at room temperature is 1.72 x 10-6 Q cm. what is the resistance of a copper wire 35 m long and 0.025 cm2 in cross section? c. What is the current produced by a voltage of 240 V through a resistance of 0.2 Q?

Q: Last wish A severely injured Peter Quill can only live for the next 3.5 hours. Before dying, he…

A:

Q: 4) What pressure is experienced by a person that goes 14 m under water? 9,800 Pa 109,800 Pa…

A:

Q: 20-V potential difference is applied across a series combination of a 10-Ω and a 30-Ω resistors.…

A: given resistances R1= 10-Ω                             R2= 30-Ω Potential difference = V = 20 V

Q: A mass of 306 g connected to a light spring of force constant 20 N/m oscillates on a horizontal,…

A: Given Mass (m) =0.306kg Amplitude (A) =0.064m Spring constant (k) =20 N/m

Q: A rifle with a weight of 35 N fires a 4.5 g bullet with a speed of 260 m/s. (a) Find the recoil…

A:

Q: Two objects are located along the y-axis. Object A has a charge of +25 µC and is located at the…

A:

Q: Determine the constant torque that must be applied to a 50 – kg flywheel, with radius of gyration 40…

A:

Q: The position of a box sliding down the spiral can be described by r [2 sin (2t)i + 2 cos tj- 2t'k]…

A:

Q: A conical pendulum consists of a bob (small mass at end of massless rope) that moves in a horizontal…

A:

Q: Earthquakes generate sound waves inside Earth. Unlike a gas, Ea waves. Typically, the speed of S…

A: GivenSpeed of TransverseS wave, vS=4.79 km/sSpeed of LongitudinalP wave, vP=7.51 km/sThe first P…

Q: 7. An aluminum wire has a diameter of 0.850 mm and is subjected to a force of 1000N. Find the stress…

A:

Q: A drop tower of an amusement park rises at 5 m/s and is 45 m above the ground when one of the riders…

A:

Q: A 2400-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 3.00 m…

A:

Q: R-18.0 2 R 6.00 2 R 3.00 2 9.0 V 3.0 V 13

A:

Q: d styrofoam bucket contains 148 g of ice at 0 °C. If 21 g of steam at 100 °C is injected into the…

A: We know that the heat transfer from the object is given as  Q = mc∆T  where m is the mass  C is the…

Q: A coil is 0.208 m long, and has 10,900 loops of wire coiled around it. If 2.44 A of current flows…

A:

Q: 2. It A = ax + 3az and B = 5ax +2ay - 6az. Find the Dot product of vector A and B O 120.6 degrees O…

A: A = a X + 3a Z B = 5 a X + 2a Y -6 aZ

Q: A 0.474 m long wire carrying 1.39 A of current is 0.0535 m from a second parallel wire carrying…

A:

Q: When a vehicle takes a sudden turn towards the left, the person seated inside the vehicle is pushed…

A: Newton's first law states that a body always maintains its inertia of state unless acted upon by an…

Q: 1) An object of mass 750g drops from a height of 5.1m. What is its velocity when it reaches a…

A: Given that                      The mass of the object is(m) = 750g = 0.75kg…

Q: Object A with charge +Q is interacting with Object B having a charge twice its own (+20). What is…

A:

Q: It takes about 3.5 seconds for a driver having 0.12% alcohol in his/her system to react to a…

A:

Q: Perfectly Inelastic Collision BEFORE AFTER m1=1300 kg m2=1900 kg m1=1300 kg m2=1900 kg V1=24 m/s…

A: Given data:  The masses of the objects  m1 = 1300 kg and m2 = 1900 kg Initial velocities  V1 = 24…

Q: The speed of glycerin flowing in a 5 cm (inner diameter pipe) is 0.54 m/s. Find the fluids speed in…

A:

Q: Elma runs 400 meters to Roldan’s house, turns around, and runs 400 meters back home. What is Elma’s…

A:

Q: 11. Multiple Choice: Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their…

A: Given data:  Two forces F1 = 11 N and F2 = 5 N Required: The range of magnitude of their sum

Q: The rocket leaves the ground from rest and reaches a height of 1000 m seconds. What is the average…

A: We know that the formula of the average  velocity is given as  velocity avg= distance Time  We also…

Q: A projectile is launched upward and to the right at an initial slope of 4 vertical and to 3…

A:

Q: A car has two headlights, and their power is derived from the car’s battery. The filament in one…

A: A car has two headlights, and their power is derived from the car’s battery. The filament in one…

Q: A moving object accelerates uniformly from 75 m/s at time t=0 to 135 m/s at t=10s. How far did it…

A:

Q: An electric motor draws an rms current of 2.86 A when operating at an rms voltage of 172 V. The…

A:

Q: What is the electric field vector at the point where charge q₂ is located due to charges q₁ and q₃?…

A:

Q: 6. A place-kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the…

A:

Q: An eyeball of a person is 2.10 cm from the cornea to the retina. A book held 30 cm from his eyes…

A:

Q: A 70-kg skier accelerates down an icy hill from an original height of 530 meters. Use the…

A: Work energy theorem It states that work done(conservative and non conservative) on any body is equal…

Q: 2. A uniform ladder weighing 330. N is leaning against a wall. The ladder slips when the angle with…

A:

Q: A 50-g ball traveling at 30.0 m/s is bounced off a brick wall and rebounds at 20.0 m/s. A high-speed…

A:

Q: A 4.0 kg ball is attached to 0.7-meter string and spun at 2.0 meters/sec. What is a) the centripetal…

A: Given data:  Mass (m) = 4.0 kg Radius (r) = 0.7 m Speed (v) = 2.0 m/s Required: Centripetal…

Q: Calculate the ratio of the resistances of the two wires that are identical except that (a) wire A is…

A:

Q: Part A The 2.4 kg, 4.0-cm-diameter disk is rotating as shown in (Figure 1). What is the angular…

A: Given: The mass of the disk is 2.4 kg. The diameter of the disk is 4 cm. The angular speed is 600…

Q: A proton and an a-particle (with their masses in the ratio of 1:4 and charges in the ratio of 1:2)…

A: ratio of masses = 1: 4 ratio of charges =  1: 2

Q: How much current is drawn to the 12-V source? What is the voltage on each resistor? 500 400 A 700 n

A:

Q: The ideal size (most efficient) for a broadcast antenna with one end on the ground is one-fourth the…

A:

Q: A plane flies south at 650 mph with a cross wind towards the east at 130 mph. What is the resultant…

A: Given value--- plane flies south at 650 mph. wind towards the east at 130 mph . We have to find---…

Q: You have two heat sinks. One is held at a constant temperature at 20 degrees C, and the other is at…

A: Given, Temperature of first heat sink T1 = 20° C = 20 + 273 K = 293 K Temperature of second heat…

Q: . A child rolls a 0.600-kg basketball up a long ramp. The basketball can be considered a…

A: Givenm=0.6 kgWhen child release ball u=8 m/srolling back downv=4 m/s

Q: 150 N 60 N 40 N 30 N 27. The figure above represents a stick of uniform density that is attached to…

A: Torque is defined as a twisting force that tends to cause rotation. We call the point where the…

Q: A charge feels a 2.89 x 10-7 N force when it moves 288 m/s perpendicular (90°) to a magnetic field…

A: Given value--- Force = 2.89 × 10-7 N. speed = 288 m/s angle = 90 degree . magnetic field = 2.77 ×…

Q: A power line carries 150 A between poles 40.0 m apart. What magnetic force does the Earth's magnetic…

A: Given: Current in the wire, i=150 A  Length of wire, L=40.0 m Magnetic field, B=5.00×10-5 T   To…

Q: A window has dimensions of 1.2 m by 2.1 m and is made of glass 6 mm thick. On a winter day, the…

A:

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.