Question
1. What are the advantages of connecting batteries in: (a) series (b) parallel 2. (a) A...
1. What are the advantages of connecting batteries in: (a) series (b) parallel
2. (a) A 2 Ω resistor is connected to a 5-V power supply.
(i) What is the current through the resistor?
(ii) How much power is delivered to the resistor?
(b) A 5 V battery having delivers 0.1 A when connected to a 10 Ω load. What is the internal resistance of the battery?
Homework Answers
Answer #1
2)
V=IR
So I=5/2=2.5A
Power=v^2/R=25/2=12.5W
B) R=V/I=5/0.1=50 ohms
So internal resistance=50-10=40 ohms
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