A cell of emf (E) and internal resistance r is connected across a variable external…

Physics · Class 12 · CBSE — Current Electricity

Answer

(B)

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• A battery of 16 V and internal resistance 2D is connected to an external resistance R. Find the value of…
• The resistance of a wire at a temperature t o C and 0 o C are related by:
• A heater coil rated as ( P , V ) is cut into two equal parts. One of the parts is then connected to a battery…
• At a hydroelectric power plant the water pressure head is at a height of 300 m and the water flow available…
• Electrons drift with speed v_d in a conductor with potential difference V across its ends. If V is reduced to…
• When the terminals of a cell are connected to a conductor of resistance R, an electric current flows through…
• Six identical cells, each of emf of 6 V, are connected in parallel. The net emf across the battery is:
• The element of a heater is rated (P, V). If it is connected across a source of voltage V 2 , then the power…

More Current Electricity questions · Browse all practice questions