AIEEE 2012 | Current Electricity Question 312 | Physics

Two electric bulbs marked $$25W$$ $$-$$ $$220$$ $$V$$ and $$100W$$ $$-$$ $$220V$$ are connected in series to a $$440$$ $$V$$ supply. Which of the bulbs will fuse?

Both

$$100$$ $$W$$

$$25$$ $$W$$

Neither

AIEEE 2011

MCQ (Single Correct Answer)

-1

If a wire is stretched to make it $$0.1\% $$ longer, its resistance will:

increase by $$0.2\% $$

decrease by $$0.2\% $$

decrease by $$0.05\% $$

increase by $$0.05\% $$

AIEEE 2010

MCQ (Single Correct Answer)

-1

Two conductors have the same resistance at $${0^ \circ }C$$ but their temperature coefficients of resistance are $${\alpha _1}$$ and $${\alpha _2}.$$ The respective temperature coefficients of their series and parallel combinations are nearly

$${{{\alpha _1} + {\alpha _2}} \over 2},\,{\alpha _1} + {\alpha _2}$$

$${\alpha _1} + {\alpha _2},\,{{{\alpha _1} + {\alpha _2}} \over 2}$$

$${\alpha _1} + {\alpha _2},\,{{{\alpha _1}{\alpha _2}} \over {{\alpha _1} + {\alpha _2}}}$$

$${{{\alpha _1} + {\alpha _2}} \over 2},\,{{{\alpha _1} + {\alpha _2}} \over 2}$$

AIEEE 2008

MCQ (Single Correct Answer)

-1

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. AIEEE 2008 Physics - Current Electricity Question 311 English