What is the current density in the wire?
Q: Three lightbulbs each with a resistance of 50ohms, are connected in series to a 100 V power supply.…
A: The total resistance in the circuit is
Q: Let's say you have a 20 cm long silicon wire, with a diameter of 4 cm. What current flows through…
A: Write the given values with suitable variables. L=20 cm=0.2 mr=4 cm2=0.02 mV=1000 Vρ=2300 Ω.m Here,…
Q: Two copper wires have the same cross-sectional area. Wire A is twice as long as wire B. How do the…
A: The objective of the question is to compare the resistivities and resistances of two copper wires…
Q: A 13.2 cm long nichrome wire is connected across the terminals of a 2.16 V battery. If the current…
A: Using Ohm's Law V = IR Where V = Voltage or Potential difference, I = Current and R = Resistance…
Q: A current i (conventional current) flows through a ohmic resistance R as shown below. As the current…
A: According the Ohm's law the voltage across resistor is equal to the product of current(I) flowing…
Q: The current supplied to a lamp with a 100-W light bulb is 0.87 amps. The lamp is wired using a…
A:
Q: A charge of 90 C passes through a wire in 1 hour and 15 minutes. What is the current in the wire?
A: Given data:- q = 90 Ct = 1 hour 15 mint = 75 min = 75×60 mint = 4500 sec
Q: lightbulb has a resistance of 175 Ω when operating with a potential difference of 165 V across it.…
A: By ohm's Law, V =I*R ere, V = potential differnce =165V I =current R = resistance =175 ohm V =I*R…
Q: A charge of 90 C passes through a wire in 1 hour and 15 minutes. What is the current in the wire?
A: Given data: Charge (q) = 90 C Time (t) = 1 hour and 15 minutes Required: Current (I)
Q: You measure the current in two different wires using an ammeter, and find them to be the same. One…
A: The objective of the question is to determine which wire, thick or thin, has a larger current…
Q: A current of 9.8 A flows through a wire. Determine the number of electrons per second passing a…
A: In this question we have to determine the number of electrons per second passing at a given point of…
Q: If a current of 1.28 amps moves in a wire, how many electrons pass by any point in the wire each…
A: Current is defined as the rate of flow of charge. The net charge in a system is depends on the…
Q: A resistor is created using a length of 20 gauge copper wire. What happens to the resistance if the…
A: See below
Q: A hollow copper wire with an inner diameter of 0.70 mm and an outer diameter of 2.4 mm carries a…
A:
Q: A typical flashlight battery will produce a 0.5 A current for about 3 hours before losing its…
A:
Q: The current of an electron beam has a measured current of I = 50.00 μA with a radius of 1.00 mm2 .…
A:
Q: A total charge of 3.34 mC passes through a cross-sectional area of a wire in 3 s. What is the…
A:
Q: A calculator draws a current of 0.0003 A for 4 min. How much charge flow
A: Q = i*t where i is current , t is time given data I = 0.0003 , t = 4*60 = 240 seconds q =…
Q: A wire with length 100 m and radius 12mm. A current passing in it with 20 A. Calculate the current…
A: Given: Length of wire, L=100 m radius, r = 12 mm Current, I = 20 A Current density, j=IA
The expression for the current density is as follows:
Step by step
Solved in 2 steps
- You know that 1000 Na+ ions flow across a cell membrane every 6.5 μs? (Na+ has the same charge as one proton) What is the total charge? What is the current?How does the resistance of a wire depend on its radius? Explain your answer.What would happen to the temperature and the resistivity value of a wire if the current were very large?
- Given the following expression for the current i (t) Where, Io 4 A and tı 3 s. Assume that the charge at t 0 is zero, i.e. q(0)-0. What is the value for charge at t 3.5s: q(3.5)-O C Unknown q(3.5)-4 C q(3.5)- 14 CA current of 3.4 A flows through a battery for 2 minutes. How much charge passes through the battery in that time?this problems is giving me hard time
- What is the current travelling through a cellphone charger when 0.20 mC of electronspass a point in 0.75 min? Answer in amperes and microamperes (μA).Answer HANDWRITTEN answer ONLY. Thanks will give like for sureWhen a potential difference is applied to a certain copper wire, a current of 7/5 A passes throughthe wire. If the wire was removed from the circuit and replaced with a copper wire of twice thecross-sectional area, what current would flow through the new wire? Assume the wires areidentical in all other aspects