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Physics

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Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

A 40 W bulb

B 60 W blub

C 100 W blub

D all will burn equally brightly

A source of EMF

B conductor

C resistor

D capacitor

A iron

B tungsten

C silver

D copper

A finite

B infinite

C zero

D changes with every conductor

A 144000J

B 144J

C 1.44J

D 14J

A one second

B one day

C one minute

D one hour

A more heat is produced in thick wire

B more heat is produced in thin wire

C no heat is produced in wire

D less heat is produced in thick wire

A remains the same

B is doubled

C is halved

D becomes zero

A nature of conductor

B dimension of conductor

C physical state of the conductor

D all of above

A same current

B same current and potential difference

C different current but same potential difference

D different current and potential differences

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Physics

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Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?

Internal resistance is the resistance offered by________________?

Which one is the best material for making connecting wires ?

Resistance of a super conductor is ______________________?

How much heat does a 40 W bulb generates in one hour ?

One kilowatt hour is the amount of energy delivered during _______________?

When same current passes for same time through a thick and thin wire_________________?

A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________?

Resistance of a conductor depends upon_________________?

All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?