Electricity Worksheet - A-Level - Intermediate

Electricity worksheet for A-Level / Vocational (Ages 16-18). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•A-Level / Vocational (Ages 16-18)•Electricityintermediate

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Advanced Electricity Concepts

A-Level Science: Electricity (Ages 16-18, Intermediate)

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Instructions: This worksheet explores advanced concepts in electricity, focusing on theoretical and practical applications. Students will solve complex problems, analyse data, and evaluate scientific principles.

Understanding Internal Resistance

Calculate the internal resistance of a battery given the following conditions. Use the formula V = E - Ir, where V is the terminal voltage, E is the electromotive force, I is the current, and r is the internal resistance. Show all your working.

1. A battery has an EMF of 12V and delivers a current of 2A to a load with a terminal voltage of 11V. Calculate the internal resistance.

Capacitance and Energy Storage

Calculate the energy stored in a capacitor using the formula E = 1/2 CV^2, where C is the capacitance and V is the voltage across the capacitor. Show all calculations.

1. A 10μF capacitor is charged to a potential difference of 5V. Calculate the energy stored in the capacitor.

I-V Characteristics of a Diode

Analyse the I-V characteristics of a diode from the provided data table. Identify key points such as threshold voltage and forward current.

Voltage (V)	Current (mA)
0.1	0.01
0.3	0.05
0.5	0.15
0.7	0.30
1.0	0.50

1. What is the threshold voltage of the diode?

2. What is the current when the voltage is 1.0V?

Electromagnetic Induction

Apply Faraday's and Lenz's laws to solve the following problems about electromagnetic induction. Show all your working clearly.

1. A coil with 500 turns is placed in a magnetic field that changes from 0.2T to 0.8T in 0.5s. Calculate the induced EMF in the coil.

Critical Essay: Transformers

Write a detailed essay discussing the principles of operation of transformers, including their efficiency and applications. Use relevant examples to support your arguments. [25 marks]

Magnetic Fields and Flux Density

Calculate the magnetic flux density using the formula B = F / (I * L), where F is the force, I is the current, and L is the length of the conductor. Show all calculations.

1. A conductor 0.5m long carries a current of 3A and experiences a force of 0.6N. Calculate the magnetic flux density.

Answer Key

Activity 1: 0.5 ohms

Activity 2: 0.125 mJ

Activity 3: 0.7V ; 0.50 mA

Activity 4: 60V

Activity 5: [Essay response required]

Activity 6: 0.4 T