The Potentiometer Lowersixth Science Physics

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Potentiometer topics for CSC/Physics

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The Potentiometer Lowersixth Science Physics


Froggy Jumps The Potentiometer Lowersixth Science PhysicsVersion en ligne Potentiometer topics for CSC/Physics par YAKILI LMS 1 What is the potentiometer primarily used to measure? a Voltage b Resistance c Current 2 Which component provides a variable potential difference in a potentiometer setup? a Ammeter coil b Rheostat knob c Slide wire or serum coil slider 3 Which instrument is compared to a potentiometer in practice? a Galvanometer b Ohmmeter c Voltmeter 4 In ideal theory, the potentiometer avoids what kind of errors? a Zero error b Contact and internal resistance errors c Parallax error 5 What is the main advantage of a potentiometer over a voltmeter? a Null measurement with no current flow through the test circuit b Requires calibration only occasionally c Higher cost 6 What property must a potentiometer circuit have to be accurate? a Fixed wiring only b Nonlinear scale c Liner contact along the slider 7 Which device is used to compare an unknown emf with a standard emf? a Ammeter b Potentiometer c Ohmmeter 8 A perfect potentiometer gives zero current through the test cell when: a Emf of test cell matches a potential drop along the wire b Test cell is shorted c Test cell is disconnected 9 What is the main difference between voltmeter and potentiometer? a Voltmeter measures current b Potentiometer measures voltage without drawing current from the circuit c Potentiometer measures resistance 10 Which law is primarily used in potentiometer principles? a Ohm's law b Conservation of energy in a null condition c Kirchhoff's voltage law 11 What component in potentiometer allows sliding contact? a Capacitor plate b Slide wire with a jockey/slider c Fixed resistor 12 What is the unit of emf measured by potentiometer? a Ohm b Ampere c Volt 13 In a potentiometer setup, the unknown emf is balanced against a: a Known potential drop on the wire b Standard current source c Low resistance 14 What happens to current in the standard cell when a null point is reached? a It remains constant but non-zero b It increases c It becomes zero 15 Which factor must be minimized for accurate potentiometer readings? a Ambient humidity b Internal resistance of the standard cell c Temperature 16 Difference between voltmeter and potentiometer relates to: a Voltage polarity b Presence of current in the test circuit c Scale accuracy 17 Which condition is ideal for the potentiometer wire? a Non-uniform heating b Variable cross-section c Uniform resistance per unit length 18 Which is a typical application of a potentiometer? a Calibration of voltage sources b Measuring current only c Measuring resistance only 19 Potentiometer II often deals with: a Battery charging b AC signal analysis c Sensitivity improvements and different wire gauges 20 What is a typical worked example topic in potentiometer? a Balancing an emf with a standard cell b Determining resistance of a wire c Measuring capacitance 21 Which quantity is directly read from the potentiometer scale? a Capacitance value b Emf value at balance point c Current in circuit 22 What is crucial to avoid in a potentiometer arrangement? a Self-heating of the wire b AC supply c External magnetic field 23 Difference between voltmeter and potentiometer is: a Voltmeter has no scale b Potentiometer is digital; voltmeter is analog c Potentiometer uses null method; voltmeter draws current 24 In a potentiometer circuit, the standard cell is: a An inductor b A stable known emf source c A variable resistor 25 Which term describes a linear potentiometer wire property? a Nonlinear gradient b Uniform resistance per unit length c Variable cross-section 26 Which tool is essential for a potentiometer balance point? a Capacitor b Galvanometer or null detector c Ammeter 27 What does the null point indicate in potentiometer? a Unknown emf equals potential drop on wire b Wire resistance max c Current max 28 Differential potentiometers compare how many emfs? a Two unknowns b One emf only c One unknown and one standard 29 Which factor is used to balance emf without current draw? a Zero resistance b Null deflection on detector c Zero current in meter 30 Potentiometer II often teaches: a Advanced balance methods b Nuclear physics c Thermodynamics 31 Which equation shows balance condition in a potentiometer? a Emf_unknown = I × R b Emf_unknown = E_wire × (length L_balanced / total length) c Emf_unknown = V_source 32 What is measured by a potentiometer when shielding is perfect? a Capacitance b Current c Voltage without loading the source 33 In a standard potentiometer, the substitute for unknown emf is: a Induced emf in coil b Potential drop along the wire c Charge on capacitor 34 What reduces error in potentiometer readings? a Using a high resistance galvanometer b Applying AC signal c Using a short wire 35 Which part of the setup is adjusted to reach balance? a Slide contact along the wire b Length of wire only c Voltage source only 36 What parameter is not required by a potentiometer? a Temperature b Current through the test cell c Balance length 37 Which quantity is stable for an accurate potentiometer reading? a Test cell stability b Wire temperature c Standard emf source stability 38 Which of these is a typical potentiometer application? a Resonant frequency b Calibration of voltages c Measuring capacitor values 39 In Worked Example 1, what is balanced against the wire drop? a Unknown emf b Current source c Resistance 40 In Worked Example 2, the null point indicates: a Wire resistance equals emf b Current is zero c Unknown emf equals wire drop 41 Which instrument helps detect balance in a potentiometer? a Voltmeter b Null detector or galvanometer c Ammeter 42 Which condition should be avoided for accuracy? a Constant humidity b Changes in wire temperature c Stable ambient light 43 Which parameter affects balance length? a Emf to be measured b Capacitor value c Inductor color 44 Which is a non-ideal factor in real potentiometers? a Infinite detector sensitivity b Internal resistance of segments c Perfect wire uniformity 45 What does a higher gauge wire do in potentiometers? a Increase EMF b Decrease accuracy c Influence resistance per unit length 46 Which method is commonly taught with potentiometer workups? a Direct reading method b Null deflection method c Auto-ranging method 47 What is the primary readout in a potentiometer method? a Length corresponding to balance b Voltage reading c Current reading 48 Which of these improves potentiometer accuracy? a Intermittent connections b Rough handling c Using a thermostated environment 49 The potentiometer is most suitable for: a Measuring resistance only b Measuring unknown emf precisely c Measuring frequency 50 Which is a characteristic of a good balance wire? a Non-conductive coating b Uniform emf drop per unit length c Non-uniform drop

The Potentiometer Lowersixth Science Physics

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The Potentiometer Lowersixth Science PhysicsVersion en ligne

par YAKILI LMS

What is the potentiometer primarily used to measure?

Which component provides a variable potential difference in a potentiometer setup?

Which instrument is compared to a potentiometer in practice?

In ideal theory, the potentiometer avoids what kind of errors?

What is the main advantage of a potentiometer over a voltmeter?

What property must a potentiometer circuit have to be accurate?

Which device is used to compare an unknown emf with a standard emf?

A perfect potentiometer gives zero current through the test cell when:

What is the main difference between voltmeter and potentiometer?

Which law is primarily used in potentiometer principles?

What component in potentiometer allows sliding contact?

What is the unit of emf measured by potentiometer?

In a potentiometer setup, the unknown emf is balanced against a:

What happens to current in the standard cell when a null point is reached?

Which factor must be minimized for accurate potentiometer readings?

Difference between voltmeter and potentiometer relates to:

Which condition is ideal for the potentiometer wire?

Which is a typical application of a potentiometer?

Potentiometer II often deals with:

What is a typical worked example topic in potentiometer?

Which quantity is directly read from the potentiometer scale?

What is crucial to avoid in a potentiometer arrangement?

Difference between voltmeter and potentiometer is:

In a potentiometer circuit, the standard cell is:

Which term describes a linear potentiometer wire property?

Which tool is essential for a potentiometer balance point?

What does the null point indicate in potentiometer?

Differential potentiometers compare how many emfs?

Which factor is used to balance emf without current draw?

Potentiometer II often teaches:

Which equation shows balance condition in a potentiometer?

What is measured by a potentiometer when shielding is perfect?

In a standard potentiometer, the substitute for unknown emf is:

What reduces error in potentiometer readings?

Which part of the setup is adjusted to reach balance?

What parameter is not required by a potentiometer?

Which quantity is stable for an accurate potentiometer reading?

Which of these is a typical potentiometer application?

In Worked Example 1, what is balanced against the wire drop?

In Worked Example 2, the null point indicates:

Which instrument helps detect balance in a potentiometer?

Which condition should be avoided for accuracy?

Which parameter affects balance length?

Which is a non-ideal factor in real potentiometers?

What does a higher gauge wire do in potentiometers?

Which method is commonly taught with potentiometer workups?

What is the primary readout in a potentiometer method?

Which of these improves potentiometer accuracy?

The potentiometer is most suitable for:

Which is a characteristic of a good balance wire?