Question # 1

If the length of solenoid is doubled but N same, B inside the solenoid becomes.

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Half

Doubled

One fourth

Four times

Cathode ray oscilloscope works by deflecting a beams

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Neutrons

Protons

Electrons

Positron

To convert a galvanometer into a volt meter a high resistance is connected.

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In series

In parallel

In perpendicular

Along tangent

For a current carrying solenoid the term 'n' has unit as.

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No unit

m^-1

m^-2

m-3

μ_∘(Ampere's constant) has value.

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4πx10^-7 WbA^-1m^-1

4πx10^-17 Wbm²

4πx10⁷ WbA^-1m^-1

4πx10-27 Wb/m²

Useful device to measure resistance, current and voltage is an electronic instrument called.

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Volt meter

Ammeter

Ohmmeter

Digital Multimeter

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

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Ammeter

Voltammeter

Ohmmeter

Multimeter

Torque on a current carrying coil

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τ=IBA cos

τ = ILB sinα

τ = IBA sinα

τ = ILBcosα

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

Magnetic flux density is measured in

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Weber

Weber/m2

Tesla -m

Gauss

The SI unit of flux density is.

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NA-1 m2

NA-1 m-1

NAm-1

NA-1 m

The dimensions of magnetic flux are

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M¹L^-2T¹A¹

MLT^-2A^-1

ML²T²A^-1

ML²T^-2A^-1

The SI unit of E is NC-1 and that of B is Na-1 m-1 then the unit of E/B is.

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ms-2

ms

ms^-1

m-1s-1

Magnetic flux density at a point due to current carrying coil is determined by

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Ampere's law

Faraday's law

Lenz's law

Gauss's law

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

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

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