A 2.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 80-cm-long nichrome wire. |
Part A What is the current in the wire? Express your answer using two significant figures. |
First find resistance of 0.80-mm-diameter, 80-cm-long nichrome wire
Resistivity,
Diameter,
Radius,
Cross-sectional area,
Length,
----------------------------------------------
Resistance,
============
Current,
ANSWER :
=======================
A 2.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 80-cm-long nichrome wire....
A 8.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 90-cm-long nichrome wire. What is the current in the wire?
A6.0V potential difference is applied between the ends of a 0.80-mm-diameter, 40-cm-long nichrome wire. Part A What is the current in the wire?
A 5.0 V potential difference is applied between the ends of a 0.80-mm-diameter, 85-cm-long nichrome wire. What is the current in the wire? resistivity of nichrome is 1.5*10^-6 (I think, if im wrong use something else)
A 7.5 V potential difference is applied between the ends of a 0.70-mm-diameter, 50-cm-longnichrome wire. What is the current in the wire? Express your answer using two significant figures.
A 5.0 V potential difference is applied between the ends of a 0.60-mm-diameter, 90-cm-long nichrome wire. Part AWhat is the current in the wire? Express your answer in amperes.
A 2.0-cm-diameter, 15-cm-long solenoid is tightly wound with one layer of wire. A 2.5 A current through the wire generates a 3.2 mT magnetic field inside the solenoid. What is the diameter of the wire, in mm? Express your answer using two significant figures.
A 2.0-cm-diameter, 15-cm-long solenoid is tightly wound with one layer of wire. A 2.1 A current through the wire generates a 3.1 mT magnetic field inside the solenoid. What is the diameter of the wire, in mm? Express your answer using two significant figures.
When a potential difference of 12 V is applied to a wire 6.6 m long and 0.33 mm in diameter the result is an electric current of 2.0 A . 1. What is the resistivity of the wire?
A 2.0-m length of wire is made by welding the end of a 120-cm-long silver wire to the end of an 80-cm-long copper wire. Each piece of wire is 0.60 mm in diameter. The wire is at room temperature, so the resistivities are as given in Table 25.1. A potential difference of 9.0 V is maintained between the ends of the 2.0-m composite wire.
A 20-cm-long nichrome wire is connected across the terminals of a 1.5 V battery. Part A What is the current density inside the wire? Part B If the current in the wire is 2.0 A , what is the wire's diameter?