By using electroscope if the body is negatively charged then due to electrostatic induction then on the disk there will be appear
1. both positive and negative charges
2. negative charge
3. positive charge
4. no charge
Posted Date:-2021-12-25 04:12:16
If one unit of charge given to the plates of a capacitor produces a potential difference of 1 volt between the plates of the capacitor then its capacitance would be
1.both 1/2 farad
2.1 farad
3.2 farad
4.3 farad
Posted Date:-2021-12-25 04:12:16
In coulomb s law the force of attraction or repulsion between two charges is
1. inversely proportional to charges directly proportional to product of charges
2. directly proportional to square of distance between them
3. Inversely proportional to distance
4.between them
Posted Date:-2021-12-25 04:12:16
In the combination of parallel capacitors the left plate of each capacitor is connected to the battery s
1.no terminal
2.both negative and positive terminals
3.negative terminal
4.positive terminal
Posted Date:-2021-12-25 04:12:16
Like charges always
1. repel each other
2. attract each other
3. cancel each other
4. none of above
Posted Date:-2021-12-25 04:12:16
The charge stored on plates of capacitors is directly proportional to the
1. potential difference
2. electric field industry
3. electric field
4.electric field intensity
Posted Date:-2021-12-25 04:12:16
The electron in a hydrogen atom experiences an electric field from the atom s nucleus in the order of
1.1012 NC-1
2.1011 NC-1
3.1015 NC-1
4.108 NC-1
Posted Date:-2021-12-25 04:12:16
The lines of the electric field were introduced by
1. Newton
2. Michael Faraday
3. John burges
4. Henry Pascal
Posted Date:-2021-12-25 04:12:16
The SI unit of charge is
1. Newton
2. coulomb
3. Pascal
4. omega
Posted Date:-2021-12-25 04:12:16
The SI unit of electric potential is
1. volts
2.ohm
3. coulomb
4. newton
Posted Date:-2021-12-25 04:12:16
To distinguish between insulators and conductors we can use
1. electroscope
2. telescope
3. endoscope
4. fiberscope
Posted Date:-2021-12-25 04:12:16
3 capacitors with capacitances 5�F 6�F and 7�F are arranged in parallel combination with a battery of 5V as 1�F = 10-6F the total capacitance should be
1. 18 �F
2. 20 �F
3. 12 �F
4. 40 �F
Posted Date:-2021-12-25 04:12:16
A capacitor holds 0.03 C of charge when fully charged by a 6V battery. To hold 2C of charge the voltage required would be
1. 150V
2. 100V
3. 300V
4. 400V
Posted Date:-2021-12-25 04:12:16
A charge in the electric field always
1.moves from lower potential to higher potential
2.moves from higher potential to lower potential
3.stay at higher potential
4.stay at lower potential
Posted Date:-2021-12-25 04:12:16
A charge in the electric field always
1. moves from lower potential to higher potential
2. moves from higher potential to lower potential
3. stay at higher potential
4. stay at lower potential
Posted Date:-2021-12-25 04:12:16
A fire or an explosion may occur due to excessive build-up of electric charges produced by
1.heat
2.friction
3.chemicals
4.work done
Posted Date:-2021-12-25 04:12:16
A glass rod rubbed with silk thread is dual charged
1. positively charged
2. negatively charged
3. not charged
4. dual charged
Posted Date:-2021-12-25 04:12:16
A person standing inside Faraday cage is not affected by the electric field because
1. electric potential is positive
2.electric potential is negative
3.zero electric potential
4. electric field outside the cage cancels the field inside
Posted Date:-2021-12-25 04:12:16
A region around a charge in which it exerts an electrostatic force on another
1.electroscope
2. electric field industry
3. electric shock
4. electric path
Posted Date:-2021-12-25 04:12:16
As per coulomb s law when the distance of separation increases the attraction of 2 positively charged objects
1.increases
2.decreases
3.remains unchanged
4.can not be determined
Posted Date:-2021-12-25 04:12:16
By rubbing a neutral body with another neutral body we can produce
1.heat
2.electric charge
3.light
4.atoms
Posted Date:-2021-12-25 04:12:16
By using electroscope if the body is negatively charged then due to electrostatic induction then on the disk there will be appear
1.both positive and negative charges
2.negative charge
3.positive charge
4.no charge
Posted Date:-2021-12-25 04:12:16
By using electroscope if the body is negatively charged then due to electrostatic induction then on the leaves there will be appear
1. both positive and negative charges
2. negative charge
3. positive charge
4.no charge
Posted Date:-2021-12-25 04:12:16
Capacitors which uses chemical reactions to store charge are
1. paper capacitors
2. electrolytic capacitor
3. parallel plate capacitor
4. mica capacitor
Posted Date:-2021-12-25 04:12:16
Due to electrostatic induction in aluminum rod due to charged plastic rod the total charge on the aluminum rod is
1. zero
2.positive
3.negative
4. dual
Posted Date:-2021-12-25 04:12:16
he spacing between field lines shows their
1. direction
2. position
3. strength
4. none of above
Posted Date:-2021-12-25 04:12:16
If 1 joule of work is done against the electric field in bringing 1C positive charge from infinity to a point in the electric field then the potential at that point will be
1.1/2 volt
2.1 volt
3.2 volt
4.3 volt
Posted Date:-2021-12-25 04:12:16
If a charge is moved from lower power potential to higher potential then energy should be
1. released
2. remains same
3.supplied
4.converted
Posted Date:-2021-12-25 04:12:16
If mica and woolen cloth are rubbed together then mica gets
1. positively charged
2. negatively charged
3. remains neutral
4. dual charged
Posted Date:-2021-12-25 04:12:16
If q1 and q2 are the magnitudes of two charges r is the distance between the two charges k is the constant of proportionality then coulomb s force F between the two charges is equal to
1.k(q1q2)/r&sub2;
2.k(q1q2)/r
3.k(q1q2) + r&sub2;
4.k(q1q2) + r
Posted Date:-2021-12-25 04:12:16
If we bring charged plastic rod near-neutral aluminum rod then rods will
1. repel each other
2. attract each other
3. remain their position
4. exchange charges
Posted Date:-2021-12-25 04:12:16
In the combination of capacitors in series the right plate of one capacitor is connected to the next capacitor s
1. middle plate
2. right plate
3. left plate
4. none of above
Posted Date:-2021-12-25 04:12:16
In the combination of parallel capacitors the right plate of each capacitor is connected to the battery s
1. no terminal
2. both negative and positive terminals
3. negative terminal
4. positive terminal
Posted Date:-2021-12-25 04:12:16
In the presence of a charged body an insulated conductor develops a positive charge at one end and a negative charge at another end. This process is called capacity
1. magnetic induction
2. electrostatic induction
3. chemical induction
4.capacity
Posted Date:-2021-12-25 04:12:16
On a dry day if we walk in a carpeted room and then touch some conductor we
1. heat
2. small electric shock
3. large electric shock
4.electrolytic capacitors
Posted Date:-2021-12-25 04:12:16
One micro coulomb is equal to
1. 10-6
2. 10-8
3. 10-4
4.9-Oct
Posted Date:-2021-12-25 04:12:16
Paper capacitor and mica capacitor are the examples of
1. ceramic capacitors
2. fixed capacitors
3. parallel plate capacitors
4. electrolytic capacitors
Posted Date:-2021-12-25 04:12:16
SI unit of capacitance is
1. newton
2. volt
3. ohm
4. faraday
Posted Date:-2021-12-25 04:12:16
The ability of a capacitor to store charge is
1. capacitance
2. resistance
3. friction
4. coulomb s force
Posted Date:-2021-12-25 04:12:16
The ability of a capacitor to store charge is affected by
1. area of the plates
2. distance between the plates
3. type of insulators used
4. all of above
Posted Date:-2021-12-25 04:12:16
The basic property of material body due to which it attracts or repels another object is called
1.induction
2.repulsion
3.capacity
4.charge
Posted Date:-2021-12-25 04:12:16
The capacitance of a capacitor is 100? F and the potential difference between plates is 50 volts then charge stored on each plate is
1. 10 mC
2. 5 mC
3. 4 mC
4. 15 mC
Posted Date:-2021-12-25 04:12:16
The direction of free test charge will be the direction of
1. electric intensity
2.coulomb s force
3.magnetic intensity
4. protons
Posted Date:-2021-12-25 04:12:16
The divergence of leaves depends upon the
1. current
2. the amount of charge
3. nature of leaves
4. nature of disc
Posted Date:-2021-12-25 04:12:16
The electric charge between two bodies can be produced by
1. sticking
2.rubbing
3. oiling
4. passing AC current
Posted Date:-2021-12-25 04:12:16
The electric field 30cm away from a light bulb is roughly
1. 15 NC-1
2. 12 NC-1
3. 10 NC-1
4. 5 NC-1
Posted Date:-2021-12-25 04:12:16
The electron in a hydrogen atom experiences an electric field from the atom s nucleus in the order of
1. 1012 NC-1
2. 1011 NC-1
3. 1015 NC-1
4. 108 NC-1
Posted Date:-2021-12-25 04:12:16
The energy supplied by a unit charge as it moves from one point to the other in the direction of the field is called
1. potential difference
2. electric field industry
3. electric field
4. electric field intensity
Posted Date:-2021-12-25 04:12:16
The field lines always emerge from
1. negative charge
2. positive charge
3. the central point of both charges
4. all of above
Posted Date:-2021-12-25 04:12:16
The fundamental law of electric force between two stationary charged particles is established by
1.Newton
2.Ohm
3.Hooke
4.Coulomb
Posted Date:-2021-12-25 04:12:16
The lines of the electric field were introduced by
1.Newton
2.Michael Faraday
3.John burges
4.Henry Pascal
Posted Date:-2021-12-25 04:12:16
The major cause of fires and explosions in many places is
1.heat
2.thunderstorm
3.static electricity
4.automobiles
Posted Date:-2021-12-25 04:12:16
The region around a charge q in which it exerts a force on a test charge is called
1. electric field intensity
2. electric force
3.electric field
4. coulomb s force
Posted Date:-2021-12-25 04:12:16
The strength of an electric field at any point in space is known as
1. electric path
2. electric shock
3. electric field industry
4. electric field
Posted Date:-2021-12-25 04:12:16
The study of charges at rest is called
1. chemical electricity
2.heat electricity
3.static electricity
4.mechanical electricity
Posted Date:-2021-12-25 04:12:16
The study of charges at rest is called
1. chemical electricity
2. heat electricity
3. static electricity
4. mechanical electricity
Posted Date:-2021-12-25 04:12:16
The thunderclouds are charged by friction between
1. clouds and air
2. layers of clouds
3. water molecules and air
4. layers of air
Posted Date:-2021-12-25 04:12:16
To store a large amount of charge at relatively low voltage we use
1. fixed capacitors
2. fixed capacitors
3.parallel plate capacitors
4. electrolytic capacitors
Posted Date:-2021-12-25 04:12:16
To store the charge a device is used called
1. electric box
2. capacitor
3. plug
4. adopter
Posted Date:-2021-12-25 04:12:16
Unlike charges always
1.cancel each other
2.repel each other
3.attract each other
4.none of above
Posted Date:-2021-12-25 04:12:16
When a charge is released in an electric field it moves from a point of potential
1. in straight line
2. none of others
3. higher to lower
4. lower to higher
Posted Date:-2021-12-25 04:12:16