Four identical bulbs \(A\), \(B\), \(C\) and \(D\) are connected in a circuit as shown in the figure. Now whenever any bulb fails, then it cannot conduct current through it. Then which of the following statements is/are true?
                          
(i) The brightness of bulb \(C\) is the highest.
(ii) If \(A\) fails, \(B\) will not glow.
(iii) If \(C\) fails, the brightness of bulb \(D\) increases.

Choose the correct option from the options given below:
1. (i) only
2. (ii) only
3. (i) and (ii) only
4. (ii) and (iii) only
Subtopic:  Heating Effects of Current |
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 
 
Assertion (A): When an external resistor of resistance R (connected across a cell of internal resistance r) is varied power consumed by resistance R is maximum when R=r.
Reason (R): Power consumed by a resistor of constant resistance R is maximum when the current through it is maximum.

In the light of the above statements choose the correct answer from the options given below:
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Heating Effects of Current |
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