Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

  • Electricity and Magnetism
  • OFFERED PRICE: R 1,600
  • View Details
Get extra R 1,600 off
USE CODE: chait6

				    Now a days students are using Electrical scooters,bikes etc. which are battery operated. Batteries are maintenence free, 12 volts, 20 to 38AH range and are equiped with charging facility form our house hold supply. My question is whether it would be advisable to charge battery during night hours or not? Because I have observed that due to higher frequency during night hours batteries are charged very faster i.e. it takes @5 hours for full charging then normal @8 hours during day time. And thereby savings of electricity. Can u explain me the basics of charing the battery in contex to above, at higer frequency(say 50.2Hz) then lower frequecy(say 48.9Hz). 

7 years ago


Answers : (2)


The supply of electric power to our houses from generating stations is mainly in form of alternating current. However the losses experienced along the path of travel from the central power grid station to the substations and then on to the distributors are phenomenal. This loss is dependent on the frequency of the a.c. supply. Along the path there are transformers, transmission cables and cores. The loss of energy in these parts depend directly on the frequency irrespective of whether the voltage is being stepped down or up.

so power consumption at your house appliances has nothing to do with frequency of AC supply

For AC 1 phase supply, Power consumed =V*I*pf

If it is operating on 3 Ph. AC then Power = 31/2*V*I*pf.

Slow charging can be carried out in  relatively simple chargers and should not result in battery overheating.

As the charging rate increases, the dangers of overcharging or overheating the battery.

The charging wholly depends on voltage and current .


Please feel free to post as many doubts on our discussion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation.

All the best.


Naga Ramesh

IIT Kgp - 2005 batch

7 years ago

Dear sir,

Thanks for reply,


I still do not understand what is the actual process takes place in-side these maintanance free batteries so that it is gatting charged or ready for another round of operation. Kidly explain in details if possible.

 Further, as per my knowledge voltage is also stabilizing during night hours. As per my voltage stabilizer observation it remains more or less constant at @ 235V during night hours then @215V during day time. Does it  has any roll on battery charging time?

7 years ago

Post Your Answer

Other Related Questions on Electromagnetic Induction

Define flux?
Flux: Flux is defined as the rate of flow of a property per unit area. For example, the magnitude of a river's current which gives the quantity of water flowing through a cross-section of...
SAIMANIKANTA one year ago
a substance mixed with a solid to lower its melting point, used especially in soldering and brazing metals or to promote vitrification in glass or ceramics. if you like my answer plz approve...
SAI SARDAR one year ago
Action or process of flowing out of a area
Shantanu Singh one year ago
Can electromagnetic waves deaviate by electric and magnetic field
electromagnetic waves such as light are massless, chargeless and therefore are unaffected by electric and magnetic filed
Ashutosh Mohan Sharma one year ago
@ sweta the electromagnetic waves are formed by combination of electric and magnetic field.. they being neutral cannot be deflected by electric and magnetic field.. in em waves equal...
Umakant biswal 11 months ago
I think it`s because electromagnetic waves are just waves and have no positive or negative charge and therefore are not affected by electric or magnetic fields.
Gaddam Chethan 11 months ago
What is EMI?
SHANMUKESHWAR one year ago
Rahul Jiji George one year ago
pa1 one year ago
what is work energy thereom...................................?
The work-energy theorem is a generalized description of motion which states that work done by the sum of all forces acting on an object is equal to change in that object’s kinetic energy....
dolly bhatia one month ago
The work W done by the net force on a particle equals the change in the particle`s kinetic energy KE: W = Δ K E = 1 2 m v f 2 − 1 2 m v i 2 . The work-energy theorem can be derived from...
Sushmit Trivedi one month ago
For any net force acting on a particle moving along any curvilinear path, it can be demonstrated that its work equals the change in the kinetic energy of the particle by a simple derivation...
rahul kushwaha 3 months ago
The cieling of long hall is 25 m high What is the maximum horizontal distance that a ball thrown with a speed of 40 ms can go without hitting the ceiling of wall? Plz explain with a DIAGRAM
Let the angle of throwing be Q with respect to the ground So, the range is R = 40*cosQ*t where t = time taken reach ground. Now, we know the time taken to reach the top of its flight is half...
Tapas Khanda 5 months ago
Let the angle of throwing be Q with respect to the ground So, the range is R = 30*cosQ*t where t = time taken reach ground. Now, we know the time taken to reach the top of its flight is half...
Tapas Khanda 5 months ago
Diagram is not required to solve this question. You can directly use the formula to find range : R = (v^2/g)*sin2Q Maximum height reached, H = v^2*sin^2Q/2g So, 25 = 40^2*sin^2Q/(2*9.8) So,...
Tapas Khanda 5 months ago
What harmfull gases are produced when we burn plastics? And can we burn plastics?
I`m doing a project, can someone help me, How to reduce those toxic contents when plantic are burnt Like sulphur, nitrogen etc
2017 years ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 6,000 off
USE CODE: chait6

  • Electricity and Magnetism
  • OFFERED PRICE: R 1,600
  • View Details

Get extra R 1,600 off
USE CODE: chait6

More Questions On Electromagnetic Induction

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details