Question # 1

If a low resistance is connected parallel to a galvanometer then galvanometer is converted.

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Ammeter

Voltammeter

Ohmmeter

Multimeter

The value of e/m is smallest for

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Proton

Electron

Beta particle

Positron

The function of three anodes a C.R.O is

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To accelerate electrons only

To focus the electrons only

To control the brightness of spot on screen

To accelerate and focus the electrons

A soft iron cylinder is placed inside coil galvanometer to:

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Make field circular and strong

Make field radial and weak

Make field radial and strong

All of above

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

A sensitive galvanometer is

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Unstable

Stable

Moderate

Both B and C

An electron moves at 2 x 10² m/sec perpendicular to magnetic field of 2T what is the magnitude of magnetic force:

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1 x 10^-6 N

6.4 x 10^-17 N

3.6 x 10^-24 N

4 x 10⁶ N

The SI Unit of magnetic induction is.

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Weber

Tesla

Gauss

Newton

The dimensions of magnetic flux are

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M¹L^-2T¹A¹

MLT^-2A^-1

ML²T²A^-1

ML²T^-2A^-1

If a charge is at rest in a magnetic field then force on charge is

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Zero

Double

One fourth

Four times

In order to measure potential difference voltmeter is always connected in.

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Series

Parallel

Both a and b

Neither in series nor in parallel

e/m=

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v/Br

Br/V

VB/r

Vr/B

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

Ampere's law is applicable to:

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Circular path

Rectangular path

To any closed path

Nonwe of these

CRO works by deflecting the beam of electron as they pass through

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Uniform magnetic field

Uniform electric field between two sets of parallel plates

Non-uniform magnetic field

None of these

A moving charge is surrounded by:

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2 Fields

3 Fields

4 Fields

None of these

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Physics FSC Part 2 Chapter 14 Online MCQ's Test MCQs With Answers

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