Series Combination of Cells
Trending Questions
Q. Two batteries A and B each of emf 2 volt are connected in series to external resistance R=1Ω. Internal resistance of A and B are 1.9Ω and 0.9Ω respectively. What is the potential difference between the terminals of battery A ?
- 2 V
- 3.8 V
- 0
- None of these
Q. A group of N cells whose emf varies directly with the internal resistance as per the equation EN=1.5 rN are connected as shown in the following figure. The current i in the circuit is
- 0.51 amp
- 5.1 amp
- 0.15 amp
- 1.5 amp
Q. The I−V characteristic of a silicon diode is shown in the figure. Calculate the resistance of the diode at Ib=15 mA.
- 20 Ω
- 50 Ω
- 30 Ω
- 10 Ω
Q. Two batteries A and B each of emf 2 volt are connected in series to external resistance R=1Ω. Internal resistance of A and B are 1.9Ω and 0.9Ω respectively. What is the potential difference between the terminals of battery A ?
- 2 V
- 3.8 V
- 0
- None of these
Q. A wire of length L and 3 identical cells of negligible internal resistances are connected in series. Due to this current, the temperature of the wire is raised by ΔT in time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but of length 2L. The temperature of wire is raised by same amount ΔT in the same time t. The value of N is
- 4
- 6
- 8
- 9
Q. In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of 20Ω. If the emf and internal resistance of each cell is 1.5 volt and 1Ω respectively then the value of i is
- 0.14 A
- 0.25 A
- 0.75 A
- 0.68 A
Q. In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of 20Ω. If the emf and internal resistance of each cell is 1.5 volt and 1Ω respectively then the value of i is
- 0.14 A
- 0.25 A
- 0.75 A
- 0.68 A
