30 Questions
What is the main advantage of using parallel circuits in homes?
It allows multiple devices to operate independently
What happens when too many devices are connected to a parallel circuit?
The risk of overloading increases
What is the purpose of earthing in electrical appliances?
To prevent electric shocks
What is the function of the earth wire in a washing machine?
To connect the metal casing to the ground
What happens when a live wire touches the metal casing of an appliance?
The current flows through the earth wire
What is a short circuit?
An unintended low-resistance path
What is the function of a fuse in an electrical circuit?
To melt and break the circuit when current exceeds a safe level
What is the purpose of a circuit breaker?
To automatically break the circuit when a surge is detected
Why is it crucial to manage the load on each circuit?
To prevent overloading and electrical fires
What is the benefit of using safety devices like fuses and circuit breakers?
They protect users and appliances from electrical hazards
Why do parallel circuits not increase overall resistance when adding devices?
Because the devices are connected in parallel
What is the primary concern when connecting multiple devices to a parallel circuit?
The circuit will become overloaded
What happens to the current when a live wire touches the metal casing of an appliance with proper earthing?
It flows through the earth wire to the ground
What is the result of a short circuit in an electrical circuit?
A surge in current
What is the purpose of safety devices like fuses and circuit breakers in electrical circuits?
To protect against overloading and short circuits
What happens when a fuse melts in an electrical circuit?
The circuit is broken
What is the primary benefit of using parallel circuits in homes?
To allow multiple devices to operate independently
What is the function of the neutral wire in a washing machine circuit?
To carry current away from the appliance
What is the purpose of connecting the exposed metal parts of electrical appliances to the ground?
To prevent electric shocks
What happens when a circuit breaker detects a surge in current?
It breaks the circuit
What happens to the flow of current through the earth wire if a live wire touches the metal casing of an electrical appliance without proper earthing?
The current increases and flows through the metal casing
What is the primary consequence of overloading a parallel circuit?
An increase in the risk of electrical fires
What is the primary function of a circuit breaker in an electrical circuit?
To automatically break the circuit when a surge is detected
What happens when a fuse melts in an electrical circuit?
The circuit is automatically broken to prevent further damage
What is the primary reason for using multiple circuits in a home?
To ensure that each circuit can handle a specific load
What is the primary consequence of a short circuit in an electrical circuit?
Damage to appliances and overheating
What is the primary benefit of using earthing in electrical appliances?
To reduce the risk of electrical shocks
What happens when a live wire touches the neutral wire in a washing machine circuit?
The current remains unaffected
What is the primary purpose of connecting the exposed metal parts of electrical appliances to the ground?
To reduce the risk of electrical shocks
What is the primary advantage of using parallel circuits in homes, in terms of managing devices?
It enables devices to operate independently
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