EV Technology - Future Battery Technologies
A wireless charger uses a frequency of 85 kHz to induce current in a device coil. What will happen if the frequency is increased to 150 kHz without changing other factors?
A wireless charger uses a frequency of 85 kHz to induce current in a device coil. What will happen if the frequency is increased to 150 kHz without changing other factors?
medium📝 Analysis Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand frequency's role in inductive charging
Charging efficiency depends on matching frequency between coils; too high frequency can reduce efficiency.Step 2: Analyze effect of increasing frequency
Increasing frequency beyond design reduces energy transfer efficiency.Final Answer:
Charging efficiency will decrease -> Option BQuick Check:
Frequency mismatch = Efficiency drops [OK]
Quick Trick: Frequency mismatch lowers charging efficiency [OK]
Common Mistakes:
- Assuming higher frequency always improves charging
- Thinking charging stops immediately
- Ignoring frequency impact
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