GK Questions with answers on Science: Physics (Electricity) Set V

GK Questions with answers on Science: Physics (Electricity) Set V, in this set you will find repository of 10 Objective Type Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.................

1. What is the formula for calculating resistivity of the material of a conductor?

A. Resistivity = R * A/ L

B. Resistivity = R + A/ I

C. Resistivity = R - A/ I

D. Resistivity = R * A

Answer: A

2. What is the SI unit of resistivity?

A. Meter

B. Watt

C. Ohm-metre

D. Volt

Answer: C

3. On what does the resistivity of a substance depends?

A. Length

B. Thickness

C. Temperature

D. All of the above

Answer: C

4. What is the resistivity of aluminium?

A. 2.63 * 10-8 ohm-meter

B. 1.60 * 10-8 ohm-meter

C. 44 * 10-8 ohm-meter

D. 184.0 * 10-8 ohm-meter

Answer: A

5. Which of the following metals has the lowest resistivity?

A. Nickel

B. Manganese

C. Silver

D. Mercury

Answer: C

6. Which alloy is used to make the heating elements of electric iron, electric kettle, geysers etc.?

A. Constantan

B. Manganin

C. Nichrome

D. All of the above

Answer: D

7. The heating elements of electric iron and toaster are made of:

A. Metals

B. Alloys

C. Glass

D. Hard rubber

Answer: B

8. Semi-conductors are used for making:

A. Solar cells

B. Toasters

C. Geysers

D. Room heaters

Answer: A

9. Which of the following are semi-conductors?

A. Nichrome

B. Copper

C. Silicon

D. Aluminium

Answer:  C

10. What is the SI unit of electric power?

A. Coulomb

B. Watt

C. Volt

D. Meter

Answer: B

GK Questions with answers on Science: Physics (Electricity) Set IV

GK Questions with answers on Science: Physics (Electricity) Set IV, in this set you will find repository of 10 Objective Type Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

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

A. Electric potential

B. Conductor

C. Potential difference

D. Electric charge

Answer: C

2. What is the SI unit of potential difference?

A. Coulomb

B. Volt

C. Ampere

D. Ohm-metre

Answer: B

3. One volt is equal to:

A. 1 J C-1

B. 2 J C

C. 1.5 J C-1

D. 0.5 J C-1

Answer: A

4. Which instrument is used to measure potential difference?

A. Galvanometer

B. Magnetometer

C. Voltmeter

D. Ammeter

Answer: C

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

A. Electric circuits

B. Electric current

C. Resistance

D. Electric power

Answer: B

6. What is the SI unit of electrical conductance?

A. Volt

B. Watt

C. Siemens

D. Ampere

Answer: C

7. 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:

A. 1 volt

B. 1 ampere

C. 1 watt

D. 1 metre

Answer: B

8. The rate at which electrical energy is consumed is called:

A. Electric power

B. Electric current

C. Electric circuit

D. Resistivity

Answer: A

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

A. Bulb

B. Cell

C. Tube light

D. All of the above

Answer: B

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

A. Negative to positive terminal

B. Positive to negative terminal

C. Flow at random

D. None of the above

Answer: A

GK Questions with answers on Science: Physics (Electricity) Set III

GK Questions with answers on Science: Physics (Electricity) Set II, in this set you will find repository of 10 Objective Type Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

1. 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:

A. Resistivity

B. Circuit

C. Electric power

D. Insulator

Answer: B

2. Which of the following is a part of electrical circuit?

A. Battery

B. Fixed resistance

C. Connecting wires

D. All of the above

Answer: D

3. The resistance which can be changed as desired is called:

A. Wire joints

B. Fixed resistance

C. Variable resistance

D. A switch

Answer: C

4. Which of the following is a current-detecting instrument?

A. Voltmeter

B. Ammeter

C. Magnetometer

D. Galvanometer

Answer: D

5. Rheostat is the other name of:

A. Fixed resistance

B. Variable resistance

C. Insulator

D. Conductor

Answer: B

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

A. Ohm’s law

B. Ampere’s law

C. Biot-Savart law

D. Coulomb’s law

Answer: A

7. What is the formula for calculating current?

A. I = V * R

B. I = V + R

C. I = V – R

D. I = V/R

Answer: D

8. Current is inversely proportional to:

A. Potential difference

B. Resistance

C. Voltage

D. Electric power

Answer: B

9. The resistance of a conductor depends on its:

A. Length

B. Nature of material

C. Thickness

D. All of the above

Answer: D

10. What is the SI unit of resistance?

A. Volt

B. Watt

C. Ohm

D. Metre

Answer: C

GK Questions with answers on Science: Physics (Electricity) Set II

GK Questions with answers on Science: Physics (Electricity) Set II , in this set you will find repository of 10 Objective Type Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

1. One ohm is equal to:

A. 1 volt / 1ampere

B. 1 volt / 1 coulomb

C. 1 volt * 1 ampere

D. 1 volt * 1 coulomb

Answer: A

2. On the basis of electrical resistance, all the substances can be divided into:

A. Good conductors

B. Resistors

C. Insulators

D. All of the above

Answer: D

3. Which of the following are resistors?

A. Silver

B. Copper

C. Aluminium

D. All the above

Answer: D

4. What do electricians wear while working with electricity?

A. Rubber handgloves

B. Woollen handgloves

C. Synthetic handgloves

D. Cotton handgloves

Answer: A

5. Which of the following factors affect resistance of a conductor?

A. Length of conductor

B. Temperature of conductor

C. Material of conductor

D. All of the above

Answer: D

6. What happens to the resistance of a wire when its length is doubled?

A. Gets doubled

B. Becomes half

C. Becomes nil

D. None of the above

Answer: A

7. Resistance of a conductor is inversely proportional to:

A. Current

B. Its length

C. Its area of cross-section

D. Potential difference

Answer: C

8. The resistance of a wire is inversely proportional to the:

A. Four times of its diameter

B. Square of its diameter

C. ¼ of its diameter

D. 1/3 of its diameter

Answer: B

9. What will be the resistance of a wire if its diameter is tripled?

A. 1/2

B. 1/4

C. 1/3

D. 1/9

Answer: D

10. Resistance of which of the following is unaffected by temperature?

A. Manganin

B. Constantan

C. Nichrome

D. All of the above

Answer: D

GK Questions with answers on Science: Physics (Electricity) Set I

GK Questions with answers on Science: Physics (Electricity) Set I , in this set you will find repository of 10 Objective Type Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

1. What is the SI unit of electric charge?

A. Volt

B. Coulomb

C. Ampere

D. ohm

Answer: B

2. How much force does one coulomb of electric charge exerts on an equal charge placed at a distance of one metre from it?

A. 9 * 109 Newton

B. 10 * 109 Newton

C. 9 * 108 Newton

D. 8 * 109 Newton

Answer: A

3. An electron possesses a negative charge of:

A. 16 * 10-19 C

B. 1.60 * 10-19 C

C. 26 * 10-19 C

D. 1.8 * 10-19 C

Answer: B

4. How many electrons taken together make one coulomb?

A. 6.25 * 1018 electrons

B. 3.25 * 1018 electrons

C. 2.25 * 1018 electrons

D. 4.25 * 1018 electrons

Answer: A

5. Which of the following is a conductor of electricity?

A. Silver

B. Copper

C. Aluminium

D. All of the above

Answer: D

6. Substances through which electricity cannot flow are called:

A. Conductors

B. Insulators

C. Wires

D. Battery

Answer: B

7. Which of the following is an insulator?

A. Carbon

B. Rubber

C. Silver

D. Copper

Answer: B

8. What should be present in a substance to make it a conductor of electricity?

A. Strongly held electrons

B. Strongly held protons

C. Free electrons

D. Free protons

Answer: C

9. Which of the following is an example of static electricity?

A. Glass rod rubbed with silk cloth

B. Ebonite rod rubbed with wool

C. Lightening in the sky

D. All of the above

Answer: D

10. What is the work done in moving a unit positive charge from infinity to that point in electric field called?

A. Electric potential

B. Potential difference

C. Electric current

D. Electric circuits

Answer:  A