JEE Physics Current Electricity MCQs Set D

    Question: A 10 m long potentiometer wire is connected to a battery having a steady voltage. A Leclanche cell is balanced at 4 m length of the wire. If the length is kept the same, but its cross-section is doubled, the null point will be obtained at a)…

JEE Physics Current Electricity MCQs Set C

    Question: a) 1.95 V b) 1.9 V c) 0.5 V d) 2 V Answer: 1.95 V   Question: In a meter bridge, the balancing length from the left end (standard resistance of one ohm is in the right gap) is found to be 20 cm. The value of the unknown…

JEE Physics Current Electricity MCQs Set B

    Question: Five cells each of emf E and internal resistance r are connected in series. Due to oversight one cell is connected wrongly. The equivalent internal resistance of the combination is a) 5r b) 4r c) 2r d) 3r Answer: 5r  …

JEE Physics Current Electricity MCQs Set A

    Question: Electric current has both magnitude and direction. It is a a) Scalar quantity b) Tensor quantity c) None of these d) Vector quantity Answer: Scalar quantity   Question: Identical piece of Ge and Cu are taken and cooled,…