Class 10 > Science

Question

Calculate the power used in 2Ω resistor in each (i) a 6V battery in series with 1Ω and 2Ω resistor (ii) a 4V battery in parallel with 12Ω and 2Ω resistor.
Hard

Solution

Calculate the power used in the 2 ohm resistor in each of the following circuits: 1) a 4V battery in parallel with 12 ohm and 2ohm resistors. 2) a 6 V battery in series with 1 ohm and 2 ohm resistors. Solution:Potential difference () = 6 V equivalent resistance of the circuit (R) = 1 +B2=30 V=IR Or l=V/R= 6/3=2A the current through the circuit (I)=2A

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