Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT2017PhysicsCurrent ElectricityActual

In the circuit shown, the heat produced in 5 Ω resistor is 10 cal s - 1 . The heat produced per sec in 4 Ω resistor will be

Options

  1. A1   cal
  2. B2   cal
  3. C3   cal
  4. D4   cal

Correct answer

B. 2   cal

Step-by-step solution

H = I 2 R t ∴   H 1 H 2 = l 1 I 2 2 × R 1 R 2 or 10 H 2 = 1 1 2 × 5 4 H 2 = 2   cal

Practice Current Electricity on Quantrex Academy →

More from Current Electricity

In the given circuit, E₁=E₂=E₃=2 ~V and R₁=R₂=4 , then current flowing through the branch A B is 2024In the following circuit diagram, when 3 resistor is removed, then equivalent resistance of the network 2024A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40 % of original value. The percentage change in its resistance will be 2024A wire of resistance 160 is melted and drawn in wire of one-fourth of its length. The new resistance of the wire will be 2024Five cells each of emf E and internal resistance r send the same amount of current through an external resistance R whether the cells are connected in parallel or in series. Then t 2024Ratio of thermal energy released in two resistor R and 3 R connected in parallel in an electric circuit is : 2023The resistance of a wire is 5 . It's new resistance in ohm if stretched to 5 times of its original length will be : 2023In the arrangement shown in figure, when the switch S₂ is open, the galvanometer, shows no deflection for l=50 ~cm when the switch S₂ is closed, the galvanometer shows no deflectio 2022 Full Current Electricity list All BITSAT PYQs