When 4 ohm wire is doubled on it calculate the new resistance?

Answer Expert Verified We consider wire is doubled on it means to fold the length of wire. It means its length will get half and area of cross section will get doubled. Thus, R’ = p’ l’/A’ = p (l /2) ÷ 2A = !/4 (p l / A) = 1/4R = 1/4 × 4 = 1Ω.

What should be the length of Nichrome wire?

Hey. Here is the answer. or, L = 108 cm. So, required length will be 108cm.

What is the resistance of a Nichrome wire?

Resistivity of some common materials

Material	Resistivity (OHM-CMIL/FT)	Resistivity (10−6 OHM-CM)
Molybdenum	32.12	5.34
Nichrome	675	112.2
Nichrome V	650	108.1
Nickel	41.69	6.93

What will be the length of a Nichrome wire of resistance 5 ohm?

Answer. or, L = 160cm. So, required length will be 160cm.

What would be the length of a Nichrome wire of resistance 4.5 ohms if the length of a similar wire of resistance 2.5 ohms is 60 cm?

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. As R∝l,R1R2=l1l2 or 4.5Ω2.5Ω=l160cm or l1=(60cm)(4.5Ω2.5Ω)=108cm.

What should be the length of silver wire of resistance 6 Ohm if the length of similar wire is 80 cm and has a resistance of 3 ohm?

what should be the length of silver wire of resistance 6 ohm if length of similar wire is 80 cm and resistance of 3 ohm. Therefore, the length of the silver wire is 160 cm. Aakash EduTech Pvt.

How does the resistance of a wire depends on its dimensions?

Solution. Resistance of a wire is directly proportional to the length of the wire. The resistance of a conductor depends on the number of collisions which the electrons suffer with the fixed positive ions while moving from one end to the other end of the conductor.

Why does resistance decrease with diameter?

Resistance is inversly proportional to the diameter of the of cross section section of a conductor . Because when diameter will large then the area of cross section will large and electrons can move more freely hence the resistance wiil reduce .