Compare the power used in the 2 ohm resistor in each of the following circuits: a)a 6V battery in series with 1ohm and 2ohm resistors,and b? a 4V battery in parallel with 12ohm and 2ohm. resistors. with explaination....pls
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The same power will use in 2ohm resistor in both (a) and (b) circuits.
Explanation:
(a)The equivalent resistance and voltage in circuit (a) will be:
R = 2+1 = 3 ohm
V = 6V
I = 6/3 = 2A
P = (2)^2×2 = 8W ……. (i)
(b) The voltage across both the resistors will be 4V because they both are in parallel so, the current through 2ohm resistor will be
I = 4/2 = 2A
P = (2)^2×2 = 8W ……. (ii)
Form equation (i) and (ii) it is cleared that same power will be used in both circuits in 2 ohm resistor.
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