Question: 2 A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a =

A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.50 x 10-3 / C. When the filament is hot and glowing, its temperature is seven times room temperature (20 .C). What is the resistance of the filament (in ohms) at room temperature? 4530 O 2080 O 234 O 1350

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

X ~ Messenger Classes Read chapter 12 - Current & Resi X *Homework Help - Q&A from Onl X + X C A https://classroom.google.com/u/2/c/NDQ3NZYwNDEwOTkw/a/NDg1NTYSNTY5MDMO/details POF chapter 12.pdfneers...

Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 778-kg electric car be able to supply to do the following? (a) accelerate...

1. A player throws a fair die and simultaneously flips a fair coin. If the coin lands heads, then she wins twice, and if tails, then one-half of the value that appears on the die. Determine her...

I. A small bulb is placed in front of a convex lens. a. Suppose that the bulb is placed as shown. Using all three principal rays. draw an accurate ray diagram to F F determine the location of the...

Prelab 6: Ray optics (a ray model for light) 1. Light from small light bulb, is incident on a mask with triangular hole, and creates an image on a paper viewing screen viewing screen arranged as...

Prelab 6: Ray optics (a ray model for light) 1. Light from small light bulb, is incident on a mask with triangular hole, and creates an image on a paper viewing screw viewing screen arranged as shown...

Prelab 6: Ray optics (a ray model for light) 1. Light from small light bulb, is incident on a mask with triangular hole, and creates an image on a paper viewing screen viewing screen arranged as...

CONVEX LENSES 1. A small bulb is placed in front of a convex lens. a Suppose that the bulb is placed as shown. Using all three principal rays, draw an accurate ray diagram to determine the location...

HW-139 1. A small bulb is placed in front of a convex lens. a. Suppose that the bulb is placed as shown. Using all three principal rays, draw an accurate ray diagram to F determine the location of...

Q3: Design a Pseudocode to insert a node in the middle of singly linked list.

MERU Plc is considering a capital budgeting project in Egypt. The project requires an initial outlay of one (1) million Egyptian pounds; the Egyptian Pound is currently valued at 0.48 (GBP). In the...

In pairs, discuss the effects of the following phrases. Write an explanation for each one. a strong breeze buffeting her b she felt woozy and light-headed c she felt a whoosh, and up she rose.

The following prices are available for call and put options on a stock priced at $50. The risk-free rate is 6 percent and the volatility is 0.35. The March options have 90 days remaining and the June...