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PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
- A silver wire has a resistance of 2.1Omega at 27.5^@C and a resistance...
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- Three identical cells of emf 4V each and unknown internal resistances ...
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- If maximum resistance from the combination of two resistances is 18 oh...
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- A wire with an area of cross-section as 10 mm^2 has a resistance of 5O...
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- A wire with an area of cross-section as 1 mm2 has a resistance of 10Q,...
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- Given three resistors of resistances 1Q (Ohm), 2Q (Ohm) and 3Q (Ohm). ...
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- How many electrons pass through alamp inone minute if current flowing ...
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- How does the conductivity of metals varies with the rise in their temp...
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- Why Eureka metal is used to make standard resistance coil?
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- Why copper is used to make connecting wires ?
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- How does the conductivity of semi-conductors varies with the rise in t...
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- Why Manganin is used to make standard resistance coil ? How does the e...
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- Define one Ampere of current.
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- What is the resistance of an ideal voltmeter and an ammeter?
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- The specific resistance of a conductor increases with Increase in temp...
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- The specific resistance of a conductor increases with Increase in cros...
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- The specific resistance of a conductor increases with Decrease in leng...
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- The specific resistance of a conductor increases with Increase in cros...
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- Why the fuse wire should have high resistance and low melting point?
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- Why the fuse wire should have high resistance and low melting point?
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