MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Ohm's Law

Nichrome and ...

Question

Nichrome and copper wires are connected across a power supply as shown below. If the cross sectional area of each wire is same, in which of the following options will the wire be the hottest?

A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A

Suggest Corrections

thumbs-up

0

Similar questions

Q. A bulb with rating 250 V, 100 W is connected to a power supply of 220 V situated 10 m away using a copper wire of area of cross-section 5 mm². How much power will be consumed by the connecting wires? Resistivity of copper = 1.7 × 10⁻⁸Ωm

Q. A heater coil is to be constructed with a nichrome wire (ρ = 1.0 × 10⁻⁶ Ωm) that can operate at 500 W when connected to a 250 V supply. (a) What would be the resistance of the coil? (b) If the cross-sectional area of the wire is 0.5 mm², what length of the wire will be needed? (c) If the radius of each turn is 4.0 mm, how many turns will be there in the coil?

Q. Four nichrome wires are connected across a power supply as shown below. In which of the following options will the wire be the least hot?
(Here A and L represent the cross-sectional area and the length of the wire respectively.)

Q. Wires of copper and nichrome of same length are given as shown below. Which among these will produce maximum heat when connected to identical power supply?
(Here A represents the cross-sectional area of the wires.)

Q. Wires of copper and nichrome of same length are given as shown below. Which among these will produce the maximum heat when connected to an identical power supply?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ohm's law

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard IX Physics

Join BYJU'S Learning Program

CrossIcon