Three resistances of equal values are arranged in four different configurations as shown below. Power dissipation in the increasing order is
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2
3
4
Official Solution
Correct Option: (1)
For figure I, Total resistance I power
For figure II, Resistance II power
For figure III, Total resistance III power
For figure IV, Total resistance IV power
02
PYQ 2012
easy
physicsID: ap-ecet-
Four resistors and form a Wheatstones bridge. The bridge is balanced, when . If and are interchanged, the bridge balances for . The value of is
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2
3
4
Official Solution
Correct Option: (3)
Balancing condition of bridge balance
03
PYQ 2014
easy
physicsID: ap-ecet-
Wires and have resistivities and , and have lengths and . If the diameter of the wire is twice that of and the two wires have same resistance, then is
