Physics MCQs

852 MCQs  (Page 66 of 86)

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Why should a resistance be introduced in a circuit in series deliberately ?
A. To increase current
B. To decrease current
C. To control current
D. Just to give a good look to circuit
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All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?
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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Resistance of a conductor depends upon_________________?
A. Nature of conductor
B. Dimension of conductor
C. Physical state of the conductor
D. All of above
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A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________?
A. Remains the same
B. Is doubled
C. Is halved
D. Becomes zero
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When same current passes for same time through a thick and thin wire_________________?
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
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One kilowatt hour is the amount of energy delivered during _______________?
A. One second
B. One day
C. One minute
D. One hour
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Resistance of a super conductor is ______________________?
A. Finite
B. Infinite
C. Zero
D. Changes with every conductor
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If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________?
A. 3600c
B. 7200c
C. 1c
D. 2c
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An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?
A. 2kwh
B. 20kwh
C. 6kwh
D. 12kwh
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Resistance of an ideal insulator is __________________?
A. Infinite
B. Zero
C. Finite
D. Depends upon nature
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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