Q18. Four bulbs B1 , B2 , B3 and B4 of 100 W each are connected to 220 V main as shown in the figure. The reading in an ideal ammeter will be (1) 0. 90 A (2) 1. 35 A (3) 0. 45 A (4) 1. 80 A
What This Question Tests
This question requires calculating the resistance of each bulb and then determining the total current drawn from the mains, assuming a parallel combination of bulbs based on options.
Concepts Tested
Formulas Used
P = V²/R
V = IR
📚 NCERT Sections This Tests
3.2 — A Battery Of Emf 10 V And Internal Resistance 3 Ω Is Connected To A
Physics Class 11 · Chapter 3
3.2 A battery of emf 10 V and internal resistance 3 Ω is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor? What is the terminal voltage of the battery when the circuit is closed?
2.7 — Three Capacitors Of Capacitances 2 Pf, 3 Pf And 4 Pf Are Connected
Physics Class 11 · Chapter 2
2.7 Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel. (a) What is the total capacitance of the combination? (b) Determine the charge on each capacitor if the combination is connected to a 100 V supply.
3.1 — The Storage Battery Of A Car Has An Emf Of 12 V. If The Internal
Physics Class 11 · Chapter 3
3.1 The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ω, what is the maximum current that can be drawn from the battery?
📋 Question Details
- Chapter
- Current Electricity
- Topic
- Series and Parallel combination of resistors
- Year
- 2014
- Shift
- 19 Apr Online
- Q Number
- Q18
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 3: Current Electricity
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