EASY
12th West Bengal Board
IMPORTANT
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For the resistance network shown in figure. Choose the correct option(s)

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Important Questions on Current Electricity

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 5 - Current Electricity>EXERCISE 5>Q 74
The current in a copper wire is increased by increasing the potential difference between its ends. Which one of the following statements regarding the number of charge carriers per unit volume in the wire and vi, the drift velocity of the charge carriers is correct?
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 5 - Current Electricity>EXERCISE 5>Q 75
The resistance of the series combination of two resistance is S When they are joined in parallel, the total resistance is P. If S=nP, then the minimum possible value of n is
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 5 - Current Electricity>EXERCISE 5>Q 76
A Wheatstone bridge has the resistance 10Ω,10Ω,10Ω and 30Ω in its four arms. What resistance joined in parallel to the 30Ω resistor will bring it to the balanced condition?