Drift Velocity of Electron

Q.

Why was a gas at low pressure taken by Thomson while conducting the cathode ray experiment?

Q.

What is carrier drift?

Q.

When a battery is connected to a closed circuit , charge flow in the circuit almost instanteously . Explain

Q.

How electron flow causes electric current with drude and Lorentz theory of electrons

Q. What is mean by drift velocity of electrons and how the electrons move in a conductor?

Q. State True or False.
When a potential difference is applied between the ends of a conductor, the free electrons inside the conductor move in only one direction with a velocity $v_d$, which is commonly referred to as drift velocity. The electrons will not have any movement in any other direction.

1. True
2. False

Q.

Question 32
How will you infer with the help of an experiment that the same current flows through every part of the circuit containing three resistances in series connected to a battery?

Q. Is there any relation between EMF of a battery and drift speed of electrons in the conductor connected to a battery?

Q.

Name the physical quantity whose unit is “electron volt”. Express 5.6 electron volt in terms of its SI unit.

1. Energy , 8.96 × 10⁻¹⁷J

2. Potential Difference, 8.96 × 10⁻¹⁷J

3. Energy, 8.96 × 10⁻¹⁹J

4. Potential Difference, 8.96 × 10⁻¹⁷J

Q. The velocity attained by electrons is known as:

1. Electric field
2. Drift velocity
3. Electric charge
4. Electric current

Q. ntan electron of mass m with an initial vel. V=Vo i (vo>0) is in an electric field E= -Eo i ( Eo=constant>0) its debrogile wavelength at time t is given byn nt1) λo/(1+eEo/m. t/Vo)n nt2)λo(1+eEot/mVo)n nt3)λon nt4)λotn

Q. A particle is moving from point A to point B and covers the entire distance of 10 km in just 2 minutes. What is the speed at which the particle is traveling?

1. 5 m/s

2. 83.3 m/s
3. 83.3 km/s
4. 20 km/s

Q.

The speed of transmission of electricity is equal to the speed of light which is given as $3\times {10}^{8}km{s}^{-1}$.

1. True

2. False

Q.

what is photoelectric effect

Q. The speed of flow of electrons is as low as 1 mm/s in a circuit. If the length of the wire from the battery to the bulb is 60mm, what is the time taken for the bulb to light up?

1. Instantaneous
2. 20s
3. 60s
4. It never lights up

Q. A particle is moving from point A to point B and covers the entire distance of 10 km in just 2 minutes. What would be the speed at which the particle was travelling?

1. 5 m/s

2. 83.3 m/s
3. 83.3 km/s
4. 20 km/s

Q.

Suppose a british official tried transmitting electricity generated from London to New Delhi in ${17}^{th}$ century when India had no access to electricity. Taking the distance between London & New Delhi approximately as 7000 km, find out the time taken to transmit electricity (assume a metallic conductor is being used for transmission).

1. 0.023 s
2. 2.3 s
3. Electricity can not be transmitted through such long distances
4. 0.1 s

Q. The speed of flow of electrons is as low as 1 mm/s in a circuit. If the length of the wire from the battery to the bulb is 60mm, what is the time taken for the bulb to light up?

1. Instantaneous
2. 20s
3. It never lights up
4. 60s

Q.

The speed of transmission of electricity is equal to the speed of light which is given as $3\times {10}^8$ km/s.

1. True
2. False

Q.

The speed of transmission of electricity is equal to the speed of light which is given as $3\times {10}^{8}km{s}^{-1}$.

1. True

2. False

Q.

Suppose a british official tried transmitting electricity generated from London to New Delhi in ${17}^{th}$ century when India had no access to electricity. Taking the distance between London & New Delhi approximately as 7000 km, find out the time taken to transmit electricity (assume a metal conductor for transmission).

1. 0.023 s
2. 0.1 s
3. 2.3 s
4. Electricity can not be transmitted for such long distances

Q.

Suppose a British official tried transmitting electricity generated from London to New Delhi in ${17}^{th}$ century when India had no access to electricity. Taking the distance between London & New Delhi approximately as 7000 km, find out the time taken to transmit electricity (assume a metal conductor for transmission).

1. 0.1 s
2. 0.023 s
3. 2.3 s
4. Electricity cannot be transmitted over such long distances

Q. The speed of flow of electrons is as low as 1 mm/s in a circuit. If the length of the wire from the battery to the bulb is 60mm, what is the time taken for the bulb to light up?

1. 20s
2. 60s
3. Instantaneous
4. It never lights up

Q. A particle is moving from point A to point B and covers the entire distance of 10 km in just 2 minutes. What would be the speed at which the particle was traveling?

1. 5 m/s

2. 20 km/s
3. 83.3 m/s
4. 83.3 km/s

Q. What is electron gain enthalphy

Q. A step-up transformer has transformation ratio of $3:2$. What is the voltage in secondary, if voltage in primary is $30V$?

1. $45V$
2. $15V$
3. $90V$
4. $300V$

Q.

What is one Mega Electron Volt?

Q.

Suppose a British official tried transmitting electricity generated from London to New Delhi in ${17}^{th}$ century when India had no access to electricity. Taking the distance between London & New Delhi approximately as 7000 km, find out the time taken to transmit electricity (assume a metal conductor for transmission).

1. 0.023 s
2. 2.3 s
3. Electricity cannot be transmitted over such long distances
4. 0.1 s

Q. Identity the physical quantities and their units using the combination of the given units coulomb (c) joule (j) meter (m) second (s) .
a. C/s. b.J/C. c. a* b d. b/a e. d * m

Q. In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.

(a) What is the p.d. across the battery?
(b) What current flows from the battery?