An electric charge of 12 coulomb flows at 120 volt potential difference in an electric heater .How much energy will consumed in heater
Answers
Given,
Charge on electric heater = 12 C
Potential difference across = 120 V
We know ,
Current , I = q / t [where q is the charge and t is the time]
Now from above , It = q
For energy ,
The total work done by the source of emf in maintaining an electric current in a given circuit for a given time is called the electric energy consumed by the circuit.
It depends on Power and Time.
E = P . t
= VI .t. [P = VI]
From above we know, I.t = q
E = V . q
on putting the values,
= 120 * 12
= 1440 Joule
Thus 1440 Joule energy will consumed in heater.
» An electric charge of 12 coulomb flows at 120 volt potential difference in an electric heater.
Here ..
- Charge (Q) = 12C
- Potential difference (V) = 120V
_________ [ GIVEN ]
• We have to find that how much energy (E) consumed in the heater.
___________________________
We know that ..
→ I =
Here ..
Q = charge, I = current and t = time
So ..
→ Q = It _____ (eq 1)
Also ..
→ E (Energy) = P(Power) × t(time)
P = VI
→ E = VI (t)
→ E = VQ _____ [From (eq 1)]
We have V = 120 V and Q = 12 C
=> E = 120 × 12
=> E = 1440
____________________________
1440 J is the energy consumed in the heater.
_______ [ ANSWER ]
____________________________