JEE 2020 Physics: Heating Effect of Current Quiz (1.07.2019)

Three resistors of 4 Ω, 6 Ω and 12 Ω are connected in parallel and the combination is connected in series with a 1.5 V battery of 1 Ω internal resistance. The rate of Joule heating in the 4 Ω resistor is

This question has Statement 1 and Statement 2 . Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement 1: The possibility of an electric bulb fusing is higher at the time of switching ON.

Statement 2: Resistance of an electric bulb when it is not lit up is much smaller than when it is lit up.

Two bulbs, one of 200W and the other of 100W, are connected in series with a 100V battery which has no internal resistance. Then,

In the circuit shown, identical resistors are connected in parallel (>1) and the combination is connected in series to another resistor ₀. In the adjoining circuit resistors of resistance are all connected in series along with ₀.
The batteries in both circuits are identical and net power dissipated in the resistors in both circuits is same. The ratio ₀/ is

Following figures show different combinations of the identical bulb(s) connected to the identical battery(ies). Which option is correct regarding the total power dissipated in the circuit?

In the circuit shown below the resistances are given in ohms and the battery is assumed ideal with emf equal to 3.0 volts. The resistor that dissipates the most power is

The figure shows three circuits I, II and III which are connected to a 3V battery. If the powers dissipated by the configurations I, II and III are P₁, P₂ and P₃ respectively, then:

In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be