Dangers Of Electricity Trivia Quiz!

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2. What is the symbol for a fuse?

A

B

C

D

The symbol for a fuse is represented by option B. This symbol is commonly used in electrical circuit diagrams to indicate the presence of a fuse. It consists of a rectangle with a diagonal line cutting through it. The diagonal line represents the fuse wire that is designed to melt and break the circuit in the event of excessive current flow, thereby protecting the circuit from damage.

Explanation

The symbol for a fuse is represented by option B. This symbol is commonly used in electrical circuit diagrams to indicate the presence of a fuse. It consists of a rectangle with a diagonal line cutting through it. The diagonal line represents the fuse wire that is designed to melt and break the circuit in the event of excessive current flow, thereby protecting the circuit from damage.

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4. In which circuit both lamps are protected by fuse?

In circuit D, both lamps are protected by a fuse. The lowercase "d" in the answer choice indicates that the circuit is lowercase, which means that both lamps are protected.

Explanation

In circuit D, both lamps are protected by a fuse. The lowercase "d" in the answer choice indicates that the circuit is lowercase, which means that both lamps are protected.

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5. Which circuit contains fuse?

The lowercase letter "c" and the uppercase letter "C" both represent the symbol for a fuse in a circuit diagram. Therefore, both "c" and "C" circuits contain a fuse.

Explanation

The lowercase letter "c" and the uppercase letter "C" both represent the symbol for a fuse in a circuit diagram. Therefore, both "c" and "C" circuits contain a fuse.

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8. An electric power tool is being used outdoors in a shower of rain. What is the greatest hazard to the user?

The cable gets hot and causes burns.

The circuit-breaker cuts off the current.

The current passes through water and causes a shock.

The tool rusts.

The greatest hazard to the user in this situation is the current passing through water and causing a shock. Water is a good conductor of electricity, and when the tool is used outdoors in a shower of rain, the water can create a pathway for the electric current to flow through, potentially causing an electric shock to the user. This can be extremely dangerous and can lead to severe injuries or even death. It is important to avoid using electric power tools in wet conditions to prevent such hazards.

Explanation

The greatest hazard to the user in this situation is the current passing through water and causing a shock. Water is a good conductor of electricity, and when the tool is used outdoors in a shower of rain, the water can create a pathway for the electric current to flow through, potentially causing an electric shock to the user. This can be extremely dangerous and can lead to severe injuries or even death. It is important to avoid using electric power tools in wet conditions to prevent such hazards.

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10. Why is a fuse used in an electrical circuit in a house?

To increase the circuit resistance

To keep the power used to a minimum value

To prevent a short-circuit from occurring

To stop the cables from carrying too much current

A fuse is used in an electrical circuit in a house to stop the cables from carrying too much current. When the current in the circuit exceeds a certain value, the fuse melts and breaks the circuit, preventing further flow of current. This is important because carrying too much current can cause overheating, damage to the cables, and even fire hazards. By using a fuse, the circuit is protected from excessive current and ensures the safety of the electrical system in the house.

Explanation

A fuse is used in an electrical circuit in a house to stop the cables from carrying too much current. When the current in the circuit exceeds a certain value, the fuse melts and breaks the circuit, preventing further flow of current. This is important because carrying too much current can cause overheating, damage to the cables, and even fire hazards. By using a fuse, the circuit is protected from excessive current and ensures the safety of the electrical system in the house.

11. Click on the image.

A

B

C

D

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Explanation

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12. A student makes the circuit shown. The fuse has blown and stopped the current. What could have caused this?

The current rating of the fuse was too high.

The current was too large.

The lamp was loose.

The voltage was too small.

The fuse in a circuit is designed to protect the circuit from excessive current. When the current flowing through the circuit exceeds the rating of the fuse, it blows and stops the current flow. In this case, the fuse has blown, indicating that the current flowing through the circuit was too large.

Explanation

The fuse in a circuit is designed to protect the circuit from excessive current. When the current flowing through the circuit exceeds the rating of the fuse, it blows and stops the current flow. In this case, the fuse has blown, indicating that the current flowing through the circuit was too large.

13. Which statement is correct?

A fuse is included in a circuit to prevent the current becoming too high.

A fuse should be connected to the neutral wire in a plug.

An electric circuit will only work if it includes a fuse.

An earth wire is needed to prevent the fuse blowing.

A fuse is included in a circuit to prevent the current from becoming too high. A fuse acts as a safety device that is designed to break the circuit when the current exceeds a certain limit. When the current becomes too high, the fuse wire inside the fuse melts, causing an open circuit and stopping the flow of electricity. This helps to protect the circuit and the connected devices from damage due to excessive current.

Explanation

A fuse is included in a circuit to prevent the current from becoming too high. A fuse acts as a safety device that is designed to break the circuit when the current exceeds a certain limit. When the current becomes too high, the fuse wire inside the fuse melts, causing an open circuit and stopping the flow of electricity. This helps to protect the circuit and the connected devices from damage due to excessive current.