4v bettery in parallel with 120 hm and 20 hm resistors
Answers
Answer:
The power used by 2 Ω resistor is 8 W.
Explanation:
To find : Compare the power used in 2 ohm resistor in each of the following Circuits,
(1) a 6 V battery in series with 1 ohm and 2 ohm resistors.
(2) a 4 V battery in parallel with 12 ohm and 2 ohm resistor
Solution :
1) The potential difference is V=6V
1 Ω and 2 Ω resistors are connected in series.
So, Equivalent resistance of the circuit is R=1+2=3 Ω.
According to Ohm’s law
The current through the circuit (I)=2 Ampere.
Now, The power used in the 2 Ω resistor is given by,
2) The potential difference is V=4V
12 Ω and 2 Ω resistors are connected in parallel.
The voltage across each component of a parallel circuit remains the same.
The power used in the 2 Ω resistor is given by,