COMPASSLearning
RegisterLogin

JEE Main · 2014 · 06 Apr 2014 · Offline · Current Electricity

WhatsApp Email
In a large building, there are 15 bulbs of , 5 bulbs of , 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 :
  1. (A)12 A✓ Correct
  2. (B)14 A
  3. (C)8 A
  4. (D)10 A

Answer: (A)

Solution

Add up the load: W. At V this draws A. The fuse must carry at least this, so the smallest standard rating that will do is A.

JEE Main · 2014 · 06 Apr 2014 · Offline · Single correct option

Practise more: all JEE Main PYQs on Current Electricity →

More JEE Main questions on Current Electricity

  1. A meter bridge with two resistances and as shown in figure was balanced (null point) at 40 cm from the point P. The null point changed to 50 cm from the point P, when resistance is connected in parallel to . The values of resistances and ar …
    JEE Main 2026View solution →
  2. An electric power line having total resistance of , delivers 1 kW of power of 250 V. The percentage efficiency of transmission line is .
    JEE Main 2026View solution →
  3. A cylindrical conductor of length 2 m and area of cross-section carries an electric current of 1.6 A when its ends are connected to a 2 V battery. Mobility of electrons in the conductor is .s. The value of …
    JEE Main 2026View solution →
  4. The charge stored by the capacitor C in the given circuit in the steady state is .
    JEE Main 2026View solution →
  5. The total length of potentiometer wire AB is 50 cm in the arrangement as shown in figure. If P is the point where the galvanometer shows zero reading then the length AP is cm .
    JEE Main 2026View solution →
  6. A battery with EMF E and internal resistance is connected across a resistance . The power consumption in R will be maximum when :
    JEE Main 2026View solution →