Olete.in – MCQs, Mock Tests & Government Job Prep | CBES Board Class 10 Electrostatics Multiple Choice Questions Set 1

To relieve the discomfort of allergy sufferers in homes, we use

1. vacuum cleaner
2. electrostatic air cleaner
3. wind cleaner
4. none of above

✅ Correct Answer: 2

Coulomb's law is only true for point charges whose sizes are

1. medium
2. very large
3. very small
4. large

✅ Correct Answer: 3

As per Coulomb's law, the force of attraction or repulsion between two point charges is directly proportional to the

1. sum of the magnitude of charges
2. square of the distance between them
3. product of the magnitude of charges
4. cube of the distance

✅ Correct Answer: 3

The ability of a capacitor to store charge depends upon

1. area of plates
2. distance between plates
3. type of dielectric used
4. All the above

✅ Correct Answer: 4

In the combination of capacitors in series, the capacitors are connected

1. side by side
2. parallel
3. up and down
4. None of the above

✅ Correct Answer: 2

The coulomb's force between the 2 point charges 10µC and 5µC placed at a distance of 150cm is

1. 0.2 N
2. 0.5 N
3. 2 N
4. 10 N

✅ Correct Answer: 1

If 5 J of work is required to shift 10 C charge from one place to another then the potential difference is

1. 0.5 V
2. 2 V
3. 5 V
4. 10 V

✅ Correct Answer: 1

The value of k in coulomb's law depends upon

1. magnitude of charges
2. distance between charges
3. medium between two charges
4. All the above

✅ Correct Answer: 3

A device which stores charge is called

1. Resistor
2. Inductor
3. capacitor
4. transistor

✅ Correct Answer: 3

The resonant circuits that tune radios to particular frequencies are called

1. plate circuits
2. radio circuits
3. filter circuits
4. fiber circuits

✅ Correct Answer: 3

The property of material due to which it attracts or repels other objects is

1. friction
2. velocity
3. current
4. charge

✅ Correct Answer: 4

In electrostatic air cleaner, air mixed with dust and pollen enters device across

1. positively charged mesh
2. negatively charged mesh
3. neutral mesh
4. dual charged mesh

✅ Correct Answer: 1

Plastic rod rubbed with fur and glass rod rubbed with silk

1. repel each other
2. mix up with each other
3. attract each other
4. None of the above

✅ Correct Answer: 3

Electric intensity being a force is a

1. unmeasurable quantity
2. vector quantity
3. scalar quantity
4. basic quantity

✅ Correct Answer: 2

If the body is positively or negatively charged the leaves of electroscope will

1. diverge
2. converge
3. stay still
4. shrink

✅ Correct Answer: 1

The amount of work done in bringing unit positive charge from infinity to a point in electric field is called

1. coulomb's force
2. electrostatic force
3. electric potential
4. resistance

✅ Correct Answer: 3

As per Coulomb's law, the force of attraction or repulsion between two point charges is inversely proportional to the

1. sum of the magnitude of charges
2. square of the distance between them
3. product of the magnitude of charges
4. cube of the distance

✅ Correct Answer: 2

Capacitor plates are separated by an insulator known as

1. non-metal
2. dielectric
3. paper
4. wood

✅ Correct Answer: 2

The capacitors which use chemical reactions to store charge are called

1. ceramic capacitors
2. fixed capacitors
3. parallel plate capacitors
4. electrolytic capacitors

✅ Correct Answer: 4

A sensitive instrument for detecting charges is called

1. gold leaf electroscope
2. telescope
3. compound microscope
4. chemical electroscope

✅ Correct Answer: 1

3 capacitors with capacitances 5µ F, 6µ F and 7µ F are arranged in series combination with a battery of 5V, as 1µ F = 10-6F, the quantity of charge on each plate of the capacitor is

1. 2.5µC
2. 1.96µC
3. 3.6µC
4. 2.89µC

✅ Correct Answer: 2

Electroscope can be charged by

1. convection
2. radiation
3. conduction
4. All the above

✅ Correct Answer: 3

The capacitor which has a dielectric between its plates and is made of a flexible material that can be rolled into the shape of a cylinder is called

1. ceramic capacitors
2. fixed capacitors
3. parallel plate capacitors
4. electrolytic capacitors

✅ Correct Answer: 1

To paint new cars automobile workers use

1. current electricity
2. static electricity
3. capacitor
4. inductor

✅ Correct Answer: 2

3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, the voltage across each capacitor is

1. 15V
2. 5V
3. 18V
4. 20V

✅ Correct Answer: 2

3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, the voltage across each capacitor is

1. 15V
2. 5V
3. 18V
4. 20V

✅ Correct Answer: 2

The charge on capacitor plates is directly proportional to

1. current
2. electric field intensity
3. potential difference
4. resistance

✅ Correct Answer: 3

In equation Q=CV, C is the constant of proportionality called the capacitor's

1. power
2. capacitance
3. heat
4. electric intensity

✅ Correct Answer: 2

Coulomb is equal to the charge of

1. 8.25×1018
2. 6.25×1018
3. 7.25×1018
4. 5.25×1018

✅ Correct Answer: 2

3 capacitors with capacitances 5µ F, 6µ F and 7µ F are arranged in series combination with a battery of 5V, as 1µ F = 10-6F, the total capacitance should be

1. 2.8 µF
2. 1.5 µF
3. 2.3 µF
4. 1.96 µF

✅ Correct Answer: 4

3 capacitors with capacitances 5µ F, 6µ F and 7µ F are arranged in series combination with a battery of 5V, as 1µ F = 10-6F, the total capacitance should be

1. 2.8 µF
2. 1.5 µF
3. 2.3 µF
4. 1.96 µF

✅ Correct Answer: 4

SI unit of electric potential is

1. C-1
2. J-1
3. JC-1
4. JC-4

✅ Correct Answer: 3

Electric field intensity is a

1. base quantity
2. scaler quantity
3. non vector quantity
4. vector quantity

✅ Correct Answer: 4

If 2 bodies are oppositely charged with 400µC and 200µC, the distance between them in the air is 0.5 m. The force between the bodies should be

1. 2880 N
2. 3000 N
3. 1850 N
4. 3250 N

✅ Correct Answer: 1

A body in the gravitational field always tends to move from a point of potential energy in straight line

1. higher to lower l
2. lower to higher
3. in straight line
4. not in straight line

✅ Correct Answer: 1

If 5 J of work is needed to shift 10C of charge from one place to another. The potential difference between the places should be

1. 0.5 V
2. 2 V
3. 5 V
4. 10 V

✅ Correct Answer: 1

The direction of electric field intensity in an electric field can be represented by drawing

1. points
2. images
3. circles
4. lines

✅ Correct Answer: 4

If the capacitance of a parallel plate capacitor is 100µ F and the potential difference is 70µ F, the quantity of charge stored on each plate would be

1. 7 mC each
2. 70 mC each
3. 700 mC each
4. 0.7 mC each

✅ Correct Answer: 1

The force acting on a unit positive charge placed at that point is termed as

1. electric field intensity
2. electric field industry
3. electric field
4. electric shock

✅ Correct Answer: 1

The fundamental law of electric force between two stationary charged particles is established by

1. Newton
2. Ohm
3. Hooke
4. Coulomb

✅ Correct Answer: 4