Safety with High Capacity Capacitors – Rankers Physics
Topic: Capacitors
Subtopic: Spherical Capacitors

Safety with High Capacity Capacitors

Assertion (A): Circuits containing high capacity capacitors, charged to high voltage should be handled with caution, even when the current in the circuit is switched off.
Reason (R): When an isolated capacitor is touched by hand or any other part of the human body, there is an easy path to the ground available for the discharge of the capacitor.
 
(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): High capacity capacitors charged to high voltage store significant energy (\(E = \frac{1}{2}CV^2\)). This energy can be lethal if discharged through a person, even after the power supply is off, as they retain charge for a long time. So (A) is true.


Reason (R): The human body acts as a conductor, providing a low-resistance path for the stored charge to discharge, often to the ground. This path can be dangerous. So (R) is true.nReason (R) provides the correct explanation for the danger mentioned in Assertion (A).

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