Electronics - Voltage and Current - Discussion
Discussion Forum : Voltage and Current - General Questions (Q.No. 2)
2.
If 60 J of energy are available for every 15 C of charge, what is the voltage?
Discussion:
162 comments Page 3 of 17.
Vijay soni said:
1 decade ago
The problem is for only one charge, hence capacitor fundamental can't be applied, therefore simple energy relation can be used here i.e.
E = q*v.
=> v = E/q.
v = 60/15.
v = 4V.
E = q*v.
=> v = E/q.
v = 60/15.
v = 4V.
Siyosi said:
7 years ago
E=q.v.
In electronics engineering this is a formula of very small energy, which is also known as " electron volt " we can say that charge*voltage is equals to Energy.
In electronics engineering this is a formula of very small energy, which is also known as " electron volt " we can say that charge*voltage is equals to Energy.
Naresh said:
1 decade ago
One of my friend written 1/2*c*v*v formula and he got 8j as the answer,
Here c is capacitance, but in question c is charge so we have to apply voltage= (energy/charge).
Here c is capacitance, but in question c is charge so we have to apply voltage= (energy/charge).
Atul mehta,wit said:
1 decade ago
The option 'a' is correct because
we know that power=volt*current.
power is measured in joule.
while current is flow of charges having unit coulomb.
v=p/c
=60/15=4
we know that power=volt*current.
power is measured in joule.
while current is flow of charges having unit coulomb.
v=p/c
=60/15=4
ASHSIH said:
1 decade ago
Electrical Energy = KWHr
Power = Voltage * Current - (i)
i=(q/t)
hence Charge (q) = i * t
Thus
E = Power * t
E = V * i * t
E = V * q
V = E / q
v = 60/15
V = 4v
Power = Voltage * Current - (i)
i=(q/t)
hence Charge (q) = i * t
Thus
E = Power * t
E = V * i * t
E = V * q
V = E / q
v = 60/15
V = 4v
KRISHNA KUMAR GOSWAMI said:
1 decade ago
As we all know power= voltage*current,
And
Power= work/time , current= charge/time
So,
Work= voltage*charge
NOW 60= VOLTAGE*15
SO, VOLTAGE= (60/15)= 4V.
And
Power= work/time , current= charge/time
So,
Work= voltage*charge
NOW 60= VOLTAGE*15
SO, VOLTAGE= (60/15)= 4V.
Nandajit said:
1 decade ago
60J means 60 watt in 1 sec. In 1 sec current is I=Q/t=15/1(Q is charge and t is time)=15 amps.
Again Watt=Voltage*Current
Therefore,60=V*15(V is voltage)
V=4V
Again Watt=Voltage*Current
Therefore,60=V*15(V is voltage)
V=4V
BOOPATHI said:
1 decade ago
E=energy measured in joules.
Q=charge measured in coulomb.
v=voltage measured in volt.
V=60/15
V=4 volt
Q=charge measured in coulomb.
v=voltage measured in volt.
V=60/15
V=4 volt
D.Saibabu said:
1 decade ago
Here he has given that Energy=60j
and q charge =15c
We know that potential(v) is nothing but the energy per unit charge so
V=E/q
V=60/15
V=4v
and q charge =15c
We know that potential(v) is nothing but the energy per unit charge so
V=E/q
V=60/15
V=4v
VamsiKrishna said:
1 decade ago
Energy stored by the capacitor in the form of charge.
Given by Energy (Q) = Charge (c) X Voltage (v).
60= 15 X Voltage.
Voltage = 60/15 = 4v.
Given by Energy (Q) = Charge (c) X Voltage (v).
60= 15 X Voltage.
Voltage = 60/15 = 4v.
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