# Arc lamps 4 metals which get heated up due to flow of

• 41

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 15 - 18 out of 41 pages.

3.Arc lamps4.Metals which get heated up due to flow of current through.5.Appliances like metal rectifiers, crystal detectors, etc. in which operation depends on the directionof current.Example 4.4For the circuit shown below, find the current through the 60-resistor.E12VR60ohm
Example 4.5The difference of potential between the terminals of an electric heater is 110 Vwhenthere is a current of 8 A in the heater.What current will bemaintained on the heater if the difference ofpotential is increased to 180 V?
Example 4.6A 6-V battery is connected for 3 hours to a rheostat and a current of 147 mA is noted.(a)What is the resistance of the rheostat?(b)What charge is take form the battery?Solution:3
2.Show the placement of an ammeter and voltmeter to measure the current andvoltage across s R1and R2.3.The current in a 5-resistor increases linearly from zero to 10 A in 2 ms. At t = 2 ms the current isagain zero, and it increases linearly to 10 A at t = 4 ms. This pattern repeats each 2 ms. Sketch thecorresponding v.R112ohmV12VR212ohm
4.A certain electrical device has an unknown resistance.You have available a 12-V battery and anammeter.How would you determine the value of the unknown resistance?Draw the necessaryconnections.Problem Set No. 7OHM’S LAW1.For the circuit shown below, find the current through the 60-resistor.
2.The difference of potential between the terminals of an electric heater is 110 V when there is a currentof 8 A in the heater.What current will be maintained on the heater if the difference of potential isincreased to 180 V?A.13.09 AB.0.02 AC.0.2 AD.2 A
3.A 6-V battery is connected for 3 hours to a rheostat and a current of 147 mA is noted.(a)What isthe resistance of the rheostat?(b)What charge is taken from the battery?

Course Hero member to access this document

Course Hero member to access this document

End of preview. Want to read all 41 pages?

Course Hero member to access this document

Term
Fall
Professor
NoProfessor
Tags
Resistor, Circuit breaker