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# Unit 4: Magnetic effects of electric current

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## About this unit

Magnets are fun and mysterious. But they can do a lot more than just push and pull each other from a distance. In this chapter, we will learn about the intimate relationship between magnets and electric currents. And we will see how we can use this relationship to build amazing things like motors and generators that have become an essential part of our lives today.

### Learn

### Practice

- Magnetic field lines: directionGet 3 of 4 questions to level up!
- Magnetic field lines: special propertiesGet 3 of 4 questions to level up!
- Magnetic field lines: field strengthGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Practice

- Right-hand thumb ruleGet 3 of 4 questions to level up!
- Magnetic field around a straight current-carrying wireGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Learn

### Practice

- Direction of magnetic field due to a current-carrying circular loopGet 3 of 4 questions to level up!
- Magnetic field due to a current-carrying solenoidGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Learn

### Practice

- Force on a current in a magnetic fieldGet 3 of 4 questions to level up!
- Fleming's left-hand ruleGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Practice

- Electric motor: parts and functionsGet 3 of 4 questions to level up!
- Electric motor: workingGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

### Practice

- Electromagnetic inductionGet 5 of 7 questions to level up!

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Level up on all the skills in this unit and collect up to 1,200 Mastery points!