When you pull out the plug connected to an electrical appliance, you often observe a spark. To which property of the appliance is this related ?

examrobotsa's picture

Submitted by examrobotsa on

Q: 94 (CDS-II/2011)
When you pull out the plug connected to an electrical appliance, you often observe a spark. To which property of the appliance is this related ?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,10,29,9,10,16,4

keywords: 

{'electrical appliance': [0, 0, 0, 1], 'inductance': [0, 0, 1, 2], 'appliance': [0, 0, 0, 2], 'spark': [0, 0, 0, 1], 'capacitance': [0, 0, 0, 1], 'plug': [0, 0, 0, 1], 'wattage': [0, 0, 0, 1], 'resistance': [0, 0, 1, 2], 'property': [15, 0, 8, 22]}

The spark that is observed when pulling out the plug connected to an electrical appliance is related to the property of inductance.

Inductance is the property of an electrical circuit that opposes changes in current flow. When the plug is being pulled out, the circuit is being interrupted, causing a sudden change in the current flow. This change in current induces a high voltage across the inductance of the circuit, resulting in a spark.

Option 1: Resistance is not directly related to the spark observed when pulling out the plug. Resistance is the property of a material or component that opposes the flow of electric current, resulting in a loss of energy in the form of heat.

Option 3: Capacitance is also not related to the spark observed. Capacitance is the ability of a system to store an electric charge.

Option 4: Wattage is a measure of the rate of energy transfer or power consumption of an electrical device. It is not directly related to the spark observed.

In conclusion, option 2, inductance, is the correct property that is related to the spark observed when pulling out the plug connected to an electrical appliance.