An electric current of 2A passes through a call of 1ohm resistance for 10 minutes. calculate the amount of heat produced.
Answers
❏ Given
An electric current of 2A passes through a call of 1ohm resistance for 10 minutes.
❏ To find
calculate the amount of heat produced.
❏ Solution
✒ According to Joules law of heating
This law can be stated as the amount of heat produced in a conductor is
❊ Directly proportional to the square of current flowing through it .
❊ Directly proportional to resistance of a conductor.
❊ Directly proportional to the time .
So, H = I²Rt
where ,
- H = heat
- I = current
- R = resistance
- t = time
✒ According to the question
- I = 2A
- R = 1ohm
- t = 10min = 10 × 60 = 600sec
- H = ??
✒ Applying formula
→ H = I²Rt
→ H = (2)² × 1 × 600
→ H = 4 × 600
→ H = 2400 Joules
Hence, the amount of heat produced is 2400 Joules
❏ Given
An electric current of 2A passes through a call of 1ohm resistance for 10 minutes.
❏ To find
calculate the amount of heat produced.
❏ Solution
✒ According to Joules law of heating
This law can be stated as the amount of heat produced in a conductor is
❊ Directly proportional to the square of current flowing through it .
❊ Directly proportional to resistance of a conductor.
❊ Directly proportional to the time .
So, H = I²Rt
where ,
H = heat
I = current
R = resistance
t = time
✒ According to the question
I = 2A
R = 1ohm
t = 10min = 10 × 60 = 600sec
H = ??
✒ Applying formula
→ H = I²Rt
→ H = (2)² × 1 × 600
→ H = 4 × 600
→ H = 2400 Joules