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प्रश्न
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उत्तर
Work done = charge x potential difference
Or, W = 5 x 1 = 5 J
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संबंधित प्रश्न
Explain the analogy between the flow of charge (or current) in a conductor under a potential difference with the free fall of a body under gravity.
The V-I graph for a series combination and for a parallel combination of two resistors is shown in Fig – 8.38. Which of the two, A or B, represents the parallel combination? Give a reason for your answer.
What do you understand by the resistance of a wire?
Suppose there are three resistors A, B, and C having resistances r1, r2, and r3 respectively. If R represents their equivalent resistance, establish the following relation `1/"R" = 1/"r"_1 + 1/"r"_2 + 1/"r"_3`, when joined in parallel.
The figure shows a circuit. When the circuit is switched on, the ammeter reads 0.5 A.
(i) Calculate the value of the unknown resistor R.
(ii) Calculate the charge passing through the 3 Ω resistor in 120 s.
(iii) Calculate the power dissipated in the 3 Ω resistor.
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
Conceptual question.
A bird sitting on a high power electric line is still safe. How?
100 J of heat is produced each second in a 4 Ω resistor. The potential difference across the resistor will be:
Assertion (A): Charges flow from higher potential to lower potential.
Reason (R): Current flows mainly due to the flow of electrons.
Name the instrument which is used to measure the potential difference.
