R4RIN – MCQs, Mock Tests | Physics G.K Question and Answer

The resistance of a wire is inversely proportional to the:

1. Four times of its diameter
2. Square of its diameter
3. ¼ of its diameter
4. 1/3 of its diameter

✅ Correct Answer: 2

Resistance of which of the following is unaffected by temperature?

1. Manganin
2. Constantan
3. Nichrome
4. All of the above

✅ Correct Answer: 4

A continuous conducting path consisting of wires and other resistances and a switch, between the two terminals of a battery along which an electric current flows is called:

1. Resistivity
2. Circuit
3. Electric power
4. Insulator

✅ Correct Answer: 2

Which of the following is a part of electrical circuit?

1. Battery
2. Fixed resistance
3. Connecting wires
4. All of the above

✅ Correct Answer: 4

The resistance which can be changed as desired is called:

1. Wire joints
2. Fixed resistance
3. Variable resistance
4. A switch

✅ Correct Answer: 3

Which of the following is a current-detecting instrument?

1. Voltmeter
2. Ammeter
3. Magnetometer
4. Galvanometer

✅ Correct Answer: 4

Rheostat is the other name of:

1. Fixed resistance
2. Variable resistance
3. Insulator
4. Conductor

✅ Correct Answer: 2

The law which gives relationship between current and potential difference is called:

1. Ohm’s law
2. Ampere’s law
3. Biot-Savart law
4. Coulomb’s law

✅ Correct Answer: 1

What is the formula for calculating current?

1. I = V * R
2. I = V + R
3. I = V – R
4. I = V/R

✅ Correct Answer: 4

Current is inversely proportional to:

1. Potential difference
2. Resistance
3. Voltage
4. Electric power

✅ Correct Answer: 2

The resistance of a conductor depends on its:

1. Length
2. Nature of material
3. Thickness
4. All of the above

✅ Correct Answer: 4

What is the SI unit of resistance?

1. Volt
2. Watt
3. Ohm
4. Metre

✅ Correct Answer: 3

In an electric circuit, the amount of work done in moving a unit charge from one point to the other point is called:

1. Electric potential
2. Conductor
3. Potential difference
4. Electric charge

✅ Correct Answer: 3

What is the SI unit of potential difference?

1. Coulomb
2. Volt
3. Ampere
4. Ohm-metre

✅ Correct Answer: 2

One volt is equal to:

1. 1 J C-1
2. 2 J C
3. 1.5 J C-1
4. 0.5 J C-1

✅ Correct Answer: 1

Which instrument is used to measure potential difference?

1. Galvanometer
2. Magnetometer
3. Voltmeter
4. Ammeter

✅ Correct Answer: 3

A flow of electric charges in a conductor such as in a metal wire is called:

1. Electric circuits
2. Electric current
3. Resistance
4. Electric power

✅ Correct Answer: 2

What is the SI unit of electrical conductance?

1. Volt
2. Watt
3. Siemens
4. Ampere

✅ Correct Answer: 3

When 1 coulomb of charge flows through any cross-section of a conductor in 1 second, the electric current flowing through it is said to be:

1. 1 volt
2. 1 ampere
3. 1 watt
4. 1 metre

✅ Correct Answer: 2

The rate at which electrical energy is consumed is called:

1. Electric power
2. Electric current
3. Electric circuit
4. Resistivity

✅ Correct Answer: 1

To which device is the two ends of a conductor are connected to maintain a potential difference and get a continuous flow of current?

1. Bulb
2. Cell
3. Tube light
4. All of the above

✅ Correct Answer: 2

The actual flow of electrons which constitute the current is from:

1. Negative to positive terminal
2. Positive to negative terminal
3. Flow at random
4. None of the above

✅ Correct Answer: 1

Name an electronic device which is used to measure the current in ampere?

1. Altimeter
2. Audiometer
3. Ammeter
4. Airometer

✅ Correct Answer: 3

Name an equipment through which the distances travelled by the wheels of the vehicles are measured?

1. Accumulator
2. Avometer
3. Animometer
4. Adiometer

✅ Correct Answer: 4

Name a device used for the magnification of the objects?

1. Bolometer
2. Barometer
3. Binoculars
4. Barograph

✅ Correct Answer: 3

The equipment used in internal combustion heat engine, vehicle engine etc. is known as:

1. Altimeter
2. Crescograph
3. Cyclotron
4. Carburator

✅ Correct Answer: 4

The device by which artificial climate is produced:

1. Callipers
2. Cytotron
3. Cardiogram
4. Cardiogram

✅ Correct Answer: 2

Name an equipment through which electrons are emitted or ejected?

1. Cathode ray tube
2. Callipers
3. Coolidge tube
4. Bolometer

✅ Correct Answer: 1

Through which equipment human’s heart beats are recorded and detected via graphics?

1. Barograph
2. Crescograph
3. Comograph
4. Cardiograph

✅ Correct Answer: 4

Name a device which is used to convert mechanical energy into electrical energy?

1. Dip Circle
2. Denial Cell
3. Dynamo
4. Dynamometer

✅ Correct Answer: 3

The device that confirms the presence of electric charge:

1. Electric Meter
2. Electro Meter
3. Electron Microscope
4. Electroscope

✅ Correct Answer: 4

Which equipment is employed to project or expose pictures on the screen?

1. Epidayscope
2. Endoscope
3. Density Meter
4. Escalator

✅ Correct Answer: 1

Which device is used to measure the depth of seas and oceans?

1. Gravometer
2. Fathometer
3. Gyroscope
4. Dilatometers

✅ Correct Answer: 2

Name a devise used to measure the sharpness of the electric current?

1. Gravometer
2. Electrometer
3. Galvanometer
4. Dynamometer

✅ Correct Answer: 3

Name an instrument used to measure the sound waves inside the water?

1. Comograph
2. Dictaphone
3. Crescograph
4. Hydrophone

✅ Correct Answer: 4

Name a device used to measure atmospheric humidity?

1. Hygrometer
2. Gravometer
3. Avometer
4. Calorimeter

✅ Correct Answer: 1

Which device is used to detect and measure the purification of the milk?

1. Microphone
2. Heart Lungs Machine
3. Ganong Respiratory
4. Lactometer

✅ Correct Answer: 4

The equipment through which any substance be cut into very small pieces:

1. Manometer
2. Microtome
3. Micrometer
4. Machmeter

✅ Correct Answer: 2

Through which device the illumination and intensity of two light sources are compared?

1. Pyrometer
2. Phototeligraphic
3. Photometer
4. Periscope

✅ Correct Answer: 3

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G.K Question and Answer - Physics Set IV