AIPMT 2003 | Current Electricity Question 101 | Physics

Two 220 volt, 100 watt bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 volt a.c. supply line. The power drawn by the combination in each case respectively will be

50 watt, 100 watt

100 watt, 50 watt

200 watt, 150 watt

50 watt, 200 watt

AIPMT 2002

MCQ (Single Correct Answer)

-1

Specific resistance of a conductor increases with

increase in temperature

increase in cross-section area

increase in cross-section and decrease in length

decrease in cross secton area.

AIPMT 2002

MCQ (Single Correct Answer)

-1

For a cell terminal potential difference is 2.2V when circuit is open and reduce to 1.8 V when cell is connected to a resistance of R = 5 $$\Omega $$. Determine internal resistance of cell (r)

$${{10} \over 9}\Omega $$

$${{9} \over 10}\Omega $$

$${{11} \over 9}\Omega $$

$${{5} \over 9}\Omega $$

AIPMT 2001

MCQ (Single Correct Answer)

-1

If specific resistance of a potentiometer wire is 10^-7$$\Omega $$ m and current flow through it is 0.1 amp., cross-sectional area of wire is 10^$$-$$6 m² then potential gradient will be

10^$$-$$2 volt/m

10^$$-$$4 volt/m

10^$$-$$6 volt/m

10^$$-$$8 volt/m.

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