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যে-সমস্ত তড়িৎকোশে রাসায়নিক শক্তি থেকে তড়িৎশক্তি পাওয়ার জন্য কোনোরকম তরল পদার্থ ব্যবহৃত হয় না, তাদের ড্রাইসেল বা নির্জল কোশ বলে।
যেমন—টর্চে বা রেডিয়োতে ব্যবহৃত তড়িৎকোশ।
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Answer ( 1 )
যে-সমস্ত তড়িৎকোশে রাসায়নিক শক্তি থেকে তড়িৎশক্তি পাওয়ার জন্য কোনোরকম তরল পদার্থ ব্যবহৃত হয় না, তাদের ড্রাইসেল বা নির্জল কোশ বলে।
যেমন—টর্চে বা রেডিয়োতে ব্যবহৃত তড়িৎকোশ।