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Grade 10 Chemistry Worksheet: Electricity Word Problems
Classroom Worksheet
Grade 10 Chemistry Worksheet: Electricity Word Problems
Electricity Word Problems
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Date________________
Score______ / 20
Grade: Grade 10
Subject: Chemistry
Topic: Electricity
Time: 20 Minutes
Difficulty: Medium
Questions: 20
Instructions: Read each word problem carefully. Show your working on a separate sheet or in the space provided. Use the correct formulas and include units in your answers. Answer all 20 questions. The questions become gradually more challenging.
Skills Practiced:
Electricity
Chemistry
Critical Thinking
Problem Solving
1Question
A simple circuit has a potential difference of 12 V and a current of 3 A. What is the resistance of the circuit?
2Question
A wire has a resistance of 5 Ω and a current of 2 A flows through it. What is the potential difference across the wire?
3Question
A light bulb operates at 9 V and has a resistance of 18 Ω. What current flows through the bulb?
4Question
An electric heater draws a current of 4 A when connected to a 24 V supply. What is its resistance?
5Question
A device has a resistance of 8 Ω and is connected to a 16 V battery. How much current does it draw?
6Question
A small motor uses a current of 1.5 A from a 6 V battery. What is the motor’s resistance?
7Question
A circuit carries a current of 0.75 A through a 20 Ω resistor. What is the voltage across the resistor?
8Question
An appliance has a resistance of 30 Ω and is connected to a 120 V supply. What current flows through it?
9Question
A student measures a current of 0.2 A through a wire connected to a 4 V supply. What is the resistance of the wire?
10Question
A battery provides 18 V to a circuit with a resistance of 9 Ω. How much current is produced?
11Question
A lamp is rated at 6 V and draws 0.8 A. What is the lamp’s resistance?
12Question
A current of 3 A flows through a resistor with a resistance of 12 Ω. What potential difference is needed?
13Question
A hair dryer has a resistance of 22 Ω and is connected to a 220 V supply. What current does it draw?
14Question
An electric bell uses 0.5 A of current when connected to a 10 V supply. What is its resistance?
15Question
A toaster element has a resistance of 48 Ω. If the current through it is 2.5 A, what is the voltage across it?
16Question
A torch bulb has a resistance of 15 Ω. If the battery provides 4.5 V, how much current flows in the circuit?
17Question
A wire carries a current of 6 A when the voltage across it is 24 V. What is the wire’s resistance?
18Question
A device has a resistance of 40 Ω. If it is connected to a 12 V battery, what current will flow, and will it be greater or less than 1 A?
19Question
A circuit component draws 0.4 A when connected to 8 V. If the voltage is increased to 12 V and the resistance stays the same, what current will flow?
20Question
A portable speaker uses a battery that provides 9 V. The current in the speaker circuit is 0.9 A. If the speaker runs for 2 hours, how much electric charge passes through the circuit?