Find equivalent resistance between $A$ and $B$
  • A$R$
  • B$\frac{{3R}}{4}$
  • C$\frac{R}{2}$
  • D$2R$
Medium
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    In the circuit shown, the reading of ammeter when switch $S$ is open and when switch $S$ is closed respectively are
    View Solution
  • 2
    In the circuit shown, the energy stored in the capacitor is $n\,\mu J$. The value of $n$ is ..............
    View Solution
  • 3
    The fact that the conductance of some metals rises to infinity at some temperature below a few Kelvin is called
    View Solution
  • 4
    In the diagram shown, the reading of voltmeter is $20\, V$ and that of ammeter is $4\, A$. The value of $R$ should be (Consider given ammeter and voltmeter are not ideal)
    View Solution
  • 5
    The resistance of a heater coil is $110\, ohm$. A resistance $R$ is connected in parallel with it and the combination is joined in series with a resistance of $11\, ohm$ to a $220\, volt$ main line. The heater operates with a power of $110\, watt$. The value of $R$ in $ohm$ is
    View Solution
  • 6
    A wire of length $5\,m$ and radius $1\,mm$ has a resistance of $1\, ohm$. What length of the wire of the same material at the same temperature and of radius $2\,mm$ will also have a resistance of $1\, ohm$  .............. $m$
    View Solution
  • 7
    A $10\, ohm$ electric heater operates on a $110\, V$ line. Calculate the rate at which it develops heat in ............... $watts$
    View Solution
  • 8
    In a Wheatstone's bridge, three resistances $P, Q$ and $R$ connected in the three arms and the fourth arm is formed by two resistances $S_1$ and $S_2$ connected in parallel. The condition for the bridge to be balanced will be
    View Solution
  • 9
    In the circuit shown, a four wire potentiometer is made of a $400\, cm$ long wire, which extends between $A$ and $B$. The resistance per unit length of the potentiometer wire is $r = 0.01\, \Omega /cm$. If an ideal voltmeter is connected as shown with jockey $J$ at $50\, cm$ from end $A$, the expected reading of the voltmeter will be: ............... $V$
    View Solution
  • 10
    The material of wire of potentiometer is
    View Solution