Drift Velocity

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 $7000km$, find out the time taken to transmit electricity (assume a metal conductor for transmission).

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

Q. Match the terms with their relative descriptions.

1. Average velocity
2. Free electrons
3. Atom arrangement
4. Electron flow

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

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. $53.3m{s}^{-1}$

2. $83.3m{s}^{-1}$

3. $90.3m{s}^{-1}$

4. $80.3m{s}^{-1}$

Q. Frequency of direct current (D.C) is zero.

1. False
2. True

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. 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.

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 can not be transmitted for such long distances
4. 0.1 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