Electrostatics interview questions

Fuse wire is an alloy of

1. Copper and aluminium
2. Copper and Tin
3. Lead and Chromium
4. Tin and Lead

_____ is an instrument to measure potential difference between the two ends of a current carrying conductor.

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

The direction of the magnetic in a current carrying conductor is given by ____

1. Maxwell’s right hand cork screw rule
2. End rule
3. Tangent law
4. Biot-Savart law

Who discovered that a magnetic field is associated with a current carrying conductor?

1. Faraday
2. Oersted
3. Huygens
4. Kirchoff

_____ of the material liberates the outer electrons from individual atoms.

1. Thermodynamic internal energy
2. Vibrational energy
3. Kinetic energy
4. Potential energy

Which one of the following is a conductor?

1. Human body
2. Glass
3. Ebonite
4. Mica

Which of the following have positive temperature coefficient of resistance?

1. Metals
2. Mica
3. Glass
4. All the above

Pick out the metal that exhibits zero Thomson effect.

1. Cd
2. Ni
3. Pt
4. Pb

All the magnetic phenomena is due to circulating electric current states ____

1. Joule’s hypothesis
2. Ampere’s hypothesis
3. Coulomb’s hypothesis
4. Wheatstone’s hypothesis

_____ is used as heating element.

1. Brass
2. Nichrome
3. Manganin
4. Constantan

The unit of resistance is

1. Mho meter
2. Ohm meter
3. Ohm
4. Mho

The chemical process of obtaining current from a secondary cell is called

1. Charging
2. Discharging
3. Recharging
4. None of the above

Wheatstone’s bridge is an application of

1. Kirchoff’s law
2. Faraday’s law
3. Ohm’s law
4. None of the above

Bodies which allow the charge to pass through them are called ____

1. Conductors
2. Dielectrics
3. Insulators
4. Semiconductors

The temperature coefficient for alloys is

1. High
2. Low
3. Very high
4. Very low

____ first introduced the electrochemical battery.

1. James Watt
2. Volta
3. Faraday
4. Stephen

Peltier coefficient at a junction of a thermocouple depends on ____

1. The charge that passes through the thermocouple
2. The temperature of the junction
3. The time for which current flows
4. The current in the thermocouple

Thermocouple is formed out of ___ dissimilar metals.

1. One
2. Two
3. Three
4. Four

The substances which acquire charges on rubbing are said to be ____

1. Electromagnetised
2. Magnetized
3. Electrified
4. None of the above

Capacitors, Van de Graff generators work on the principle of ___

1. Action of points
2. Static induction
3. Dynamic induction
4. Electrostatic induction

Pick out the scalar quantity from the following

1. Force
2. Velocity
3. Current
4. Momentum

The tolerance of silver ring is

1. 2%
2. 5%
3. 8%
4. 10%

____ is an insulating material in which all the electrons are tightly bound to the nucleus of the atom.

1. Ebonite
2. Oil
3. Mica
4. All the above

Capacitor is a device to store ___

1. Resistance
2. Current
3. Charge
4. Potential

The temperature coefficient of manganin wire is _____

1. Very high
2. Zero
3. High
4. Low

The charges in a electrostatic field are analogous to ___ in a gravitational field.

1. Moment of inertia
2. Force
3. Weight
4. Mass

The unit of electric potential is

1. Coulomb
2. Volt
3. Ampere
4. Joule

The dipole moment of nonpolar molecules

1. is infinity
2. is varying
3. is permanent
4. is zero

Which of the following is a scalar quantity?

1. Electric field intensity
2. Electric charge
3. Electric flux
4. Electric dipole moment

According to electrostatic behavior materials are divided into how many categories?

1. One
2. Two
3. Three
4. Four