NEETPhysicsCurrent ElectricityMCQ+4 / −1
The terminal voltage of the battery, whose emf is and internal resistance , when connected through an external resistance of as shown in the figure is:

- A4 V
- B6 V
- C8 V
- D10 V
View written solutionFree
Correct answer: C

$$ \begin{aligned} \text { Current in circuit } i \& =\frac{10}{4+1}=2 \mathrm{~A} \\ \text { Terminal voltage } \& =E-i R \\ \& =10-2 \times 1=8 \mathrm{~V} \end{aligned} $$
More from Current Electricity
- A wire of length '' and resistance is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The…2024 · MCQ
- Two heaters and have power rating of and , respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:2024 · MCQ
- Choose the correct circuit which can achieve the bridge balance.2024 · MCQ
- A uniform wire of diameter carries a current of when the mean drift velocity of electrons in the wire is . For a wire of diameter of the same material to carry a current of , the…2024 · MCQ
- A uniform metal wire of length has resistance. Now this wire is stretched to a length and then bent to form a perfect circle. The equivalent resistance across any arbitrary diameter of that circle is2024 · MCQ
- The given circuit shows a uniform straight wire of length fixed at both ends. In order to get zero reading in the galvanometer , the free end of is to be placed from at: Includes diagram2024 · MCQ
- A certain wire has resistance . The resistance of another wire of same material and equal length but of diameter thrice the diameter of A will be :2023 · MCQ
- A copper wire of radius contains free electrons per cubic metre. The drift velocity for free electrons when current flows through the wire will be (Given, charge on electron …2023 · MCQ