Choose the words that make each statement correct. (i) When two or more resistors are connected in series, the equivalent resistance is always [(a) greater than; (b) less than] any individual resistance. (ii) When two or more resistors are connected in parallel, the equivalent resistance is always [(c) greater than; (d) less than] any individual resistance.
(i)
Answer to Problem 1CQ
Explanation of Solution
The equivalent resistance of two or more resistors in series is,
The sum of resistances is always greater than the individual resistance.
Conclusion:
When two or more resistors are connected in series, the equivalent resistance is always greater than any individual resistance. Therefore, option (a) is correct.
For the equivalent resistance is always less than any individual resistance, the resistors should be connected in parallel. Therefore, option (b) is incorrect.
(ii)
Answer to Problem 1CQ
Explanation of Solution
The equivalent resistance of two or more resistors in parallel is,
Conclusion:
When two or more resistors are connected in parallel, the equivalent resistance is always less than any individual resistance. Therefore, option (d) is correct.
For the equivalent resistance is always greater than any individual resistance, the resistors should be connected in series. Therefore, option (c) is incorrect.
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Chapter 18 Solutions
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