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Standard XII

Physics

Lenz's Law

A conductor o...

Question

A conductor of length $l$ and mass $m$ can slide without any friction along the two vertical conductors connected at the top through a capacitor (figure). A uniform magnetic field $B$ is set up $⊥$ to the plane of paper. The acceleration of the conductor

is constant

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increases

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decreases

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cannot be determined

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Solution

The correct option is D decreases
using Lenz's law there will be an upward force acting on the conductor and this force increases as the velocity increases, thus, the acceleration of the conductor decreases.

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A conductor of length l and mass m can slide without any friction along the two vertical conductors connected at the top through a capacitor (figure). A uniform magnetic field B is set up ⊥ to the plane of paper. The acceleration of the conductor

The correct option is D decreasesusing Lenz's law there will be an upward force acting on the conductor and this force increases as the velocity increases, thus, the acceleration of the conductor decreases.

A conductor of length $l$ and mass $m$ can slide without any friction along the two vertical conductors connected at the top through a capacitor (figure). A uniform magnetic field $B$ is set up $⊥$ to the plane of paper. The acceleration of the conductor

The correct option is D decreases
using Lenz's law there will be an upward force acting on the conductor and this force increases as the velocity increases, thus, the acceleration of the conductor decreases.