EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Magnetic Effect of Electric Current>MHT-CET Medical 2020>Q 4

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The deflection in the galvanometer falls to ${(\frac{1}{5})}^{th}$ when $4 Ω$ resistance is connected in parallel with it. What will be the deflection if an additional resistance of $2 Ω$ is connected in parallel with the above shunted galvanometer?

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Important Questions on Magnetic Effect of Electric Current

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Magnetic Effect of Electric Current>MHT-CET Medical 2020>Q 1

A wire of length

L

carries current

I

along

x

axis. A magnetic field

B = B_{0} (\hat{ı} - \hat{ȷ} - \hat{k}) T

acts on the wire. The magnitude of magnetic force acting on the wire is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Magnetic Effect of Electric Current>MHT-CET Medical 2020>Q 2

Two parallel conducting wires of equal lengths placed distance

d

apart carry currents

I_{1}

and

I_{2}

respectively in opposite directions. The resultant magnetic field at the midpoint of both the wires is (

μ_{o} =

permeability of free space.)

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Magnetic Effect of Electric Current>MHT-CET Medical 2020>Q 3

The current sensitivity of moving coil galvanometer of resistance

100 Ω

is

1 div / mA .

Its voltage sensitivity is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 18 - Magnetic Effect of Electric Current>MHT-CET Medical 2020>Q 4

The deflection in the galvanometer falls to

{(\frac{1}{5})}^{th}

when

4 Ω

resistance is connected in parallel with it. What will be the deflection if an additional resistance of

2 Ω

is connected in parallel with the above shunted galvanometer?