Q18.A generator has armature resistance of 0.1Ω and develops an induced emf of 120 V when driven at its rated speed. Its terminal voltage when a current of 50 A is being drawn is (1) 120 V (2) 5 V (3) 115 V (4) 70 V
What This Question Tests
This question is a direct application of the formula for calculating the terminal voltage of a generator, accounting for its induced EMF and internal resistance.
Concepts Tested
Formulas Used
V_terminal = ε - 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?
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?
4.8 — A Closely Wound Solenoid 80 Cm Long Has 5 Layers Of Windings Of 400
Physics Class 11 · Chapter 4
4.8 A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 1.8 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.
📋 Question Details
- Chapter
- EMI
- Topic
- Generators, Terminal voltage
- Year
- 2012
- Shift
- 19 May Online
- Q Number
- Q18
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 6: Electromagnetic Induction
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