Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Current Electricity question

2024 · 30 Jan · Shift 1 · Q77
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Current Electricity
  5. /2024 · 30 Jan · Shift 1 · Q77

Current Electricity question

2024 · 30 Jan · Shift 1 · Q77

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
An electric toaster has resistance of 60Ω60 \Omega60Ω at room temperature (27∘C)\left(27^{\circ} \mathrm{C}\right)(27∘C). The toaster is connected to a 220 V220 \mathrm{~V}220 V supply. If the current flowing through it reaches 2.75 A2.75 \mathrm{~A}2.75 A, the temperature attained by toaster is around : ( if α=2×10−4\alpha=2 \times 10^{-4}α=2×10−4/∘C^\circ \mathrm{C}∘C)
  1. A
    1235 ∘^\circ∘ C
  2. B
    1667 ∘^\circ∘ C
  3. C
    694 ∘^\circ∘ C
  4. D
    1694 ∘^\circ∘ C
PreviousNext

More from Current Electricity

  • Two cells are connected in opposition as shown. Cell E1​ is of 8 V emf and 2Ω internal resistance; the cell E2​ is of 2 V emf and 4Ω internal resistance. The terminal potential… Includes diagram2024 · Numerical
  • When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into two halves and these halves are connected mutually parallel across the same supply, the energy…2024 · MCQ
  • Two resistance of 100Ω and 200Ω are connected in series with a battery of 4 V and negligible internal resistance. A voltmeter is used to measure voltage across 100Ω resistance, which gives reading as 1 V…2024 · Numerical
  • Two conductors have the same resistances at 0∘C but their temperature coefficients of resistance are α1​ and α2​. The respective temperature coefficients for their series and parallel combinations are :2024 · MCQ
  • Equivalent resistance of the following network is ​Ω. Includes diagram2024 · Numerical
  • By what percentage will the illumination of the lamp decrease if the current drops by 20%?2024 · MCQ
  • The resistance per centimeter of a meter bridge wire is r, with XΩ resistance in left gap. Balancing length from left end is at 40 cm with 25Ω resistance in right gap. Now the wire is replaced by another wire…2024 · MCQ
  • In the following circuit, the battery has an emf of 2 V and an internal resistance of 32​Ω. The power consumption in the entire circuit is ​ W. Includes diagram2024 · Numerical