Battery Energy Loss & Heaters – Rankers Physics
Topic: Current Electricity
Subtopic: Combination of Batteries

Battery Energy Loss & Heaters

Assertion (A): In real battery total chemical energy lost in the battery can not be obtained at load resistance.
Reason (R): Two heaters with different resistance are connected in parallel. Higher resistance heater will glow more.
 
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution:

Assertion (A) is true due to the internal resistance of real batteries, which dissipates some chemical energy as heat. Reason (R) is false; for parallel connections, power \( P = V^2 / R \), so the heater with *lower* resistance will glow more.

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