During charging, rising temperature in a nickel-cadmium cell causes which change in internal resistance?

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Enhance your understanding of the fundamentals of electricity with the AMT General Exam. Study with multiple-choice questions crafted to improve your knowledge and confidence. Prepare effectively for your success!

Multiple Choice

During charging, rising temperature in a nickel-cadmium cell causes which change in internal resistance?

Explanation:
Temperature affects how easily ions move and how quickly the chemical reactions at the electrodes occur. In a nickel-cadmium cell, when charging causes the cell to heat up, ionic conductivity and reaction rates improve, which lowers the resistance inside the cell. So the internal resistance decreases as temperature rises. The other ideas don’t fit because increased temperature wouldn’t raise internal resistance, and a change in resistance isn’t the same as a change in voltage.

Temperature affects how easily ions move and how quickly the chemical reactions at the electrodes occur. In a nickel-cadmium cell, when charging causes the cell to heat up, ionic conductivity and reaction rates improve, which lowers the resistance inside the cell. So the internal resistance decreases as temperature rises. The other ideas don’t fit because increased temperature wouldn’t raise internal resistance, and a change in resistance isn’t the same as a change in voltage.

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