What is the effect of increasing the number of turns in a coil on the induced EMF?
Practice Questions
1 question
Q1
What is the effect of increasing the number of turns in a coil on the induced EMF?
It increases the induced EMF
It decreases the induced EMF
It has no effect
It makes the EMF negative
Increasing the number of turns (N) in a coil increases the induced EMF, as EMF = -N * (dΦ/dt).
Questions & Step-by-step Solutions
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Q
Q: What is the effect of increasing the number of turns in a coil on the induced EMF?
Solution: Increasing the number of turns (N) in a coil increases the induced EMF, as EMF = -N * (dΦ/dt).
Steps: 6
Step 1: Understand what a coil is. A coil is a wire wound in a spiral shape.
Step 2: Learn about EMF. EMF stands for electromotive force, which is the voltage generated by a coil when it experiences a change in magnetic field.
Step 3: Know what 'turns' means. The number of turns refers to how many times the wire is wound around in the coil.
Step 4: Recognize the relationship between turns and EMF. The formula for induced EMF is EMF = -N * (dΦ/dt), where N is the number of turns and dΦ/dt is the rate of change of magnetic flux.
Step 5: Realize that increasing N means more turns in the coil. More turns means that the coil can capture more of the changing magnetic field.
Step 6: Conclude that if N increases, the induced EMF also increases. This is because the more turns you have, the greater the total voltage generated.
