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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula to calculate electric current?
π‘ Hint: Think about how charge changes over time.
Question 2
Easy
Define voltage.
π‘ Hint: Consider what drives the current through a circuit.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does Ohm's Law state?
- V = I/R
- V = IR
- V = I + R
π‘ Hint: Focus on rearranging the terms correctly.
Question 2
True or false: Higher resistance results in lower current, when voltage is constant.
- True
- False
π‘ Hint: Consider how V and R interact in the evidence.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A circuit has a voltage of 24V and consists of four resistors in series with total resistance of 12Ξ©. Calculate the current flowing in the circuit.
π‘ Hint: Review how series resistance works to solve for total current.
Question 2
In a copper wire, the average drift speed of conduction electrons is calculated to be 1.1mm/s. If there are 8.5 x 10^28 free electrons per cubic meter, find the current in a cross-sectional area of 1.0 x 10^-6 mΒ².
π‘ Hint: Break down the components and substitute into the current density formula.
Challenge and get performance evaluation