Skip to main content

Back to the full dot-point answer

EnglandElectronicsQuick questions

Component 1 Discovering Electronics

Quick questions on Driving LEDs with a current-limiting resistor - Eduqas GCSE Electronics

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
Show answer
Why must an LED have a series resistor? [1 mark]
What is q2?
Show answer
An LED (VL=2.0 VV_L = 2.0\ \text{V}) runs at 10 mA10\ \text{mA} from a 5.0 V5.0\ \text{V} supply. Find the resistor. [2 marks]
What is q3?
Show answer
State a typical forward voltage for a red LED. [1 mark]

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All ElectronicsQ&A pages