on connecting the 2 poles (- and +) of a battery y does it discharge and becomes hot?

Question

and y does it not discharge when connected through a bulb or anything else.

Answer 1

When you connect the two poles of a battery directly together without a resistor you produce a very high current. This current flowing through the battery generates heat. If you do this with a powerful battery it can explode. You can overheat your wires and start fires. Please do not do this. When you connect through a light bulb, the resistance of the lightbulb reduces the current preventing the heat from building up too high. Current = Voltage / Resistance as resistance approaches zero, current approaches infinity. Higher voltage batteries overheat and explode faster. Don't short circuit batteries it is dangerous.

Answer 2

If we connect to poles of a battery , spark will be produced at the end of the wires connecting the poles of a battery and the wires connecting the two poles will be burnt out after some time, because of excess heat release.

Answer 3

you do get current flow. current = voltage divided by the resistance. voltage times the current gives you power (energy) which you feel as heat

The battery voltage is usually small and there is a built in resistance in light bulbs, there will be a discharge, might not be anough to energize the light buld. a higher resistance gives you a smaller current so you may not feel the heat

Answer 4

when you connect the battery... there is flow of current through the wire...and every wire causes resistance...even if it is made up of silver...due to the resistance some work is done to overcome the resistance..and this work causes loss of energy in the form of heat...that is why it gets heated and gets discharged

Answer 5

The electricity is cycling through the battery and not through anything else, and it can move faster because there isn't anything that the charge has to go through to get back.

Answer 6

work done=charge multiply by potential difference -eq1
W=QV
but,charge=current into time
Q=IT
by putting the value of charge in eq1,we get
W=VIT
from ohms law-V=IR where (R is resistence) we get
W=IIRT
This work done appears in the form of heat.

Answer 7

Yes if there is no resistance in the way.

Answer 8

WHILE CONNECTING AS PER QUESTION ......... IF THE CONDEUCTIVITY IS BAD THEN INTERNAL RESISTANCE GET HIGHER VALUE SIMULTANEOUSLY DISCHARGING GET HIGHER................ SIMILARLY RESISTANCE IS PROPORTIONAL TO TEMPERATURE.SO IT GET HEAT