Understanding Electrical Components and Safety

Understanding Electrical Components and Safety

9th Grade

69 Qs

quiz-placeholder

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Understanding Electrical Components and Safety

Understanding Electrical Components and Safety

Assessment

Quiz

Physics

9th Grade

Easy

Created by

Stalbans Physics

Used 3+ times

FREE Resource

69 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the current-voltage graph of a fixed resistor look like?

A straight line through the origin

A curve that starts steep and flattens out

A horizontal line

A vertical line

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which component has a current-voltage graph that is a curve starting steep and flattening out?

Fixed resistor

Filament lamp

Diode

Thermistor

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the earth wire in a three-pin plug?

To carry the current to the appliance

To provide a path for electrical current to the ground in case of a fault

To prevent the plug from overheating

To supply extra voltage to the appliance

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which pin in a three-pin plug is connected to the live wire?

The top pin

The left pin

The right pin

The bottom pin

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of electrical power?

Volt

Ampere

Watt

Ohm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a safety feature of mains electricity?

High voltage

Circuit breakers

Thin wires

No insulation

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the resistance of a light-dependent resistor (LDR) as light intensity increases?

Resistance increases

Resistance decreases

Resistance remains constant

Resistance becomes zero

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