Physics
You have installed a new battery of emf 12 V and internal resistance 5.0 x 10-2 Ω in your car. You self-start your car and it draws a current of 90 A. What would be the teminal voltage of battery when the self-starter is working ?
Related Questions
The diagram below in figure shows the arrangement of five different resistances connected to a battery of e.m.f. 1.8 V. Calculate —
(a) the total resistance of the circuit, and
(b) the reading of ammeter A.
A cell of e.m.f. 2 V and internal resistance 1.2 Ω is connected to an ammeter of resistance 0.8 Ω and two resistors of 4.5 Ω and 9 Ω as shown in figure.
Find —
(a) the reading of the ammeter,
(b) the potential difference across the terminals of the cell, and
(c) the potential difference across the 4.5 Ω resistor.
The electrical energy supplied by a source is given by:
- W = QV
- W = VIt
- W = I2Rt
- All of the above
1 WH is equal to :
- 3600 J
- 360 J
- 36 J
- 3.6 J