Physics · 2020
JEE Main · 7 January 2020, Shift 2 · Q11
In a building there are 15 bulbs of 45 W, 15 bulbs of 100 W, 15 small fans of 10 W and 2 heaters of 1 kW. The voltage of electric main is 220 V. The…
In a building there are $\displaystyle 15$ bulbs of $\displaystyle 45$ W , $\displaystyle 15$ bulbs of $\displaystyle 100$ W, $\displaystyle 15$ small fans of $\displaystyle 10$ W and $\displaystyle 2$ heaters of $\displaystyle 1$ kW. The voltage of electric main is $\displaystyle 220$ V . The minimum fuse capacity (rated value) of the building will be :
Official answer
(4)
$\displaystyle 20$ A
More from Current Electricity
- Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length l_1 is 40 cm. Now an unknown resistance x is…2022
- A battery of 6 V is connected to the circuit as shown below. The current I drawn from the battery is:2022
- The ratio of the equivalent resistance of the network (shown in figure) between the points a and b when switch is open and switch is closed is x: 8.…2021
- The H amount of thermal energy is developed by a resistor in 10 s when a current of 4 A is passed through it. If the current is increased to 16A, the…2023
- A 4 V battery with internal resistance 1 Ω and a 6 V battery with 2 Ω internal resistance are connected to a resistor of 5 Ω as shown in fig. The…2021
- Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and internal resistance of 3 Ω. Cell 2 has emf of 6V and internal…2023
- The current density in a cylindrical wire of radius 4 mm is 4 × 10^6 Am^-2. The current through the outer portion of the wire between radial…2022
- For the two cells having same EMF E and internal resistance r, the current passing through the external resistor 6 Ω is same when both the cells are…2026
JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.