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प्रश्न
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
पर्याय
1445 J
1536 J
1569 J
1640 J
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उत्तर
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be 1536 J.
Explanation:
From Ohm's law, we know that
V = IR
Given: I = 0.8 A, R = 40 Ω, t = 1 min (60 sec)
Now, V = I.R
V = 0.8 × 40
V = 32 volt
Power, P = V × I
P = 32 × 0.8
P = 25.6 watt
Heat = P × t
Heat = 25.6 × 60
Heat = 1536 J
संबंधित प्रश्न
What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?
- It will remain unchanged.
- It will become four times.
- It will become one-fourth.
- It will become half.
What is an Ohmic resistor?
How does an increase in the temperature affect the specific resistance of a :
(i) Metal and
(ii) Semiconductor ?
Fig. represents the circuit used for the verification of Ohm's law. Label the parts from A to F. state the function of each.
State Ohm’s law.
What is ohmic device?
Which of the following I-V graph represents ohmic conductors?
Assertion: The statement of Ohm’s law is K = IR.
Reason: V = IR is the equation which defines resistance.
Ohm's law deals with the relationship between ______
The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become ______.
