A wire of resistance R, connected to an ideal battery consumes a power P. If the wire is…
Physics · Class 12 · CBSE — Current Electricity
A wire of resistance R, connected to an ideal battery consumes a power P. If the wire is gradually stretched to double its initial length, and connected across the same battery, the power consumed will be:
- \(\frac{{P}}{4}\)
- \(\frac{{P}}{2}\)
- P
- \(2 {P}\)
Answer
(A) P 4
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- In the network shown in figure, the values of V 0 and I are
- The equivalent resistance of the circuit shown in figure between the points A and B if V A < V B is
- Electrons drift with speed v_d in a conductor with potential difference V across its ends. If V is reduced to…
- If the resistance of the wire is made four times keeping potential difference across it constant, then the…
- Assertion (A): When electrons drift in a conductor, it does not mean that all free electrons in the conductor…
- Ten identical cells each of emf and internal resistance r are connected in series to form a closed circuit…
- A heater coil rated as ( P , V ) is cut into two equal parts. One of the parts is then connected to a battery…
- Assertion (A): When three electric bulbs of power 200 W, 100 W and 50 W are connected in series to a source…
More Current Electricity questions · Browse all practice questions