Calculate the length of the wire required to get resistance, Electrical Engineering

Assignment Help:

An  electric  heater  element  is  made  of  Nichrome  wire  having  resistivity  equal  to 100 ×10-8 ohm-metre. The diameter of the wire is 0.3 mm. Calculate the length of the wire required to get a resistance of 30 ohms.

As the heater element is Nichrome ρ = 100x 10-8 ?-m.

a = (π/4) (0.3×10-3 )2 m2

a = 7.069 x 10-8 m2

R =30 ?

R = ρ (I/a) or 30 = (100 ×10-8 × l)/ (7.069 ×10-8)

I = 2.12 m.


Related Discussions:- Calculate the length of the wire required to get resistance

Give some applications of german silver, Give some applications of German s...

Give some applications of German silver. German silver is an alloy of zinc, nickel and copper. German silver is used in electrical measuring instruments.

#t voice controlled mobile base, The aim of this project is to design, co...

The aim of this project is to design, construct and build a motorised base driven by two small dc motors. The motor drives are two H-bridges. The switching devices in these bridges

Sim set interrupt mask instruction, SIM Set Interrupt Mask Instruction ...

SIM Set Interrupt Mask Instruction This  instruction is used  to mask unmask 8085 interrupts and send  serial  output  data. The accumulator  is used to load the  require data

Discuss the need of peripheral component interconnect bus, Discuss the need...

Discuss the need of PCI bus. Peripheral Component Interconnect (PCI): It was developed by Intel and introduced in 1993 year. This is geared particularly to fifth- and sixth-

What is message demodulation, Q. What is Message Demodulation? The majo...

Q. What is Message Demodulation? The major advantage of the conventional (standard) DSB AMsignal transmission is the ease with which the signal can be demodulated. Themessage s

Evaluate discrete-time signal, Consider the following signals, sketch each ...

Consider the following signals, sketch each one of them and comment on the periodic nature: (a) x(t) = A cos(2πf 0 t + θ), where A, f 0 , and θ are the amplitude, frequency, and

Determine the location and the value of the point charge, Q. The electric f...

Q. The electric field intensity due to a point charge in free space is given to be Determine the location and the value of the point charge.

Tunneling effect, what is tunneling effect ? With calculation.

what is tunneling effect ? With calculation.

Drain characteristics of fet, Q. In The Drain Characteristics Of FET What D...

Q. In The Drain Characteristics Of FET What Does The Region At Pinch Off? Field Effect Transistors (FETs) utilize a conductive channel whose resistance is controlled by an appl

Evaluate the transfer function for multi loop control system, Q. The block ...

Q. The block diagram of Figure represents a multi loop control system. (a) Determine the transfer function C(s)/R(s). (b) For G 2 G 3 H 2 = 1, evaluate C(s)/R(s).

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd